Finding the Fourth Proportional to 13,142.52, 19,702.89 and 5,240.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,142.52 : 19,702.89 = 5,240.16 : x
2. Step 2: Convert to fraction form
   13,142.52/19,702.89 = 5,240.16/x
3. Step 3: Cross multiply
   13,142.52x = 19,702.89 × 5,240.16
4. Step 4: Simplify right side
   13,142.52x = 103,246,296.06
5. Step 5: Solve for x
   x = 103,246,296.06/13,142.52
6. Step 6: Final answer
   x = 7,855.90