Finding the Fourth Proportional to 10,535.16, 15,807.35 and 4,992.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,535.16 : 15,807.35 = 4,992.47 : x
2. Step 2: Convert to fraction form
   10,535.16/15,807.35 = 4,992.47/x
3. Step 3: Cross multiply
   10,535.16x = 15,807.35 × 4,992.47
4. Step 4: Simplify right side
   10,535.16x = 78,917,654.10
5. Step 5: Solve for x
   x = 78,917,654.10/10,535.16
6. Step 6: Final answer
   x = 7,490.88