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Finding the Fourth Proportional to 11,778.16, 17,668.06 and 3,984.34

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Solution

The fourth proportional to 11,778.16, 17,668.06 and 3,984.34 is: 5,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,778.16 : 17,668.06 = 3,984.34 : x
  2. Step 2: Convert to fraction form
    11,778.16/17,668.06 = 3,984.34/x
  3. Step 3: Cross multiply
    11,778.16x = 17,668.06 × 3,984.34
  4. Step 4: Simplify right side
    11,778.16x = 70,395,558.18
  5. Step 5: Solve for x
    x = 70,395,558.18/11,778.16
  6. Step 6: Final answer
    x = 5,976.79

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