Finding the Fourth Proportional to 8,629.34, 12,925.04 and 7,131.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,629.34 : 12,925.04 = 7,131.59 : x
2. Step 2: Convert to fraction form
   8,629.34/12,925.04 = 7,131.59/x
3. Step 3: Cross multiply
   8,629.34x = 12,925.04 × 7,131.59
4. Step 4: Simplify right side
   8,629.34x = 92,176,047.57
5. Step 5: Solve for x
   x = 92,176,047.57/8,629.34
6. Step 6: Final answer
   x = 10,681.70