Finding the Fourth Proportional to 10,510.29, 15,837.75 and 8,702.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,510.29 : 15,837.75 = 8,702.10 : x
2. Step 2: Convert to fraction form
   10,510.29/15,837.75 = 8,702.10/x
3. Step 3: Cross multiply
   10,510.29x = 15,837.75 × 8,702.10
4. Step 4: Simplify right side
   10,510.29x = 137,821,684.28
5. Step 5: Solve for x
   x = 137,821,684.28/10,510.29
6. Step 6: Final answer
   x = 13,113.02