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Finding the Fourth Proportional to 15,578.88, 23,364.54 and 5,189.28

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Solution

The fourth proportional to 15,578.88, 23,364.54 and 5,189.28 is: 7,782.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.88 : 23,364.54 = 5,189.28 : x
  2. Step 2: Convert to fraction form
    15,578.88/23,364.54 = 5,189.28/x
  3. Step 3: Cross multiply
    15,578.88x = 23,364.54 × 5,189.28
  4. Step 4: Simplify right side
    15,578.88x = 121,245,140.13
  5. Step 5: Solve for x
    x = 121,245,140.13/15,578.88
  6. Step 6: Final answer
    x = 7,782.66

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