Finding the Fourth Proportional to 10,700.08, 16,071.98 and 8,729.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,700.08 : 16,071.98 = 8,729.04 : x
2. Step 2: Convert to fraction form
   10,700.08/16,071.98 = 8,729.04/x
3. Step 3: Cross multiply
   10,700.08x = 16,071.98 × 8,729.04
4. Step 4: Simplify right side
   10,700.08x = 140,292,956.30
5. Step 5: Solve for x
   x = 140,292,956.30/10,700.08
6. Step 6: Final answer
   x = 13,111.39