Finding the Fourth Proportional to 10,336.31, 14,257.87 and 7,146.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,336.31 : 14,257.87 = 7,146.02 : x
2. Step 2: Convert to fraction form
   10,336.31/14,257.87 = 7,146.02/x
3. Step 3: Cross multiply
   10,336.31x = 14,257.87 × 7,146.02
4. Step 4: Simplify right side
   10,336.31x = 101,887,082.15
5. Step 5: Solve for x
   x = 101,887,082.15/10,336.31
6. Step 6: Final answer
   x = 9,857.20