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Finding the Fourth Proportional to 12,859.74, 19,300.47 and 5,074.02

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Solution

The fourth proportional to 12,859.74, 19,300.47 and 5,074.02 is: 7,615.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.74 : 19,300.47 = 5,074.02 : x
  2. Step 2: Convert to fraction form
    12,859.74/19,300.47 = 5,074.02/x
  3. Step 3: Cross multiply
    12,859.74x = 19,300.47 × 5,074.02
  4. Step 4: Simplify right side
    12,859.74x = 97,930,970.79
  5. Step 5: Solve for x
    x = 97,930,970.79/12,859.74
  6. Step 6: Final answer
    x = 7,615.31

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