Finding the Fourth Proportional to 9,706.88, 14,557.21 and 3,131.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,706.88 : 14,557.21 = 3,131.53 : x
2. Step 2: Convert to fraction form
   9,706.88/14,557.21 = 3,131.53/x
3. Step 3: Cross multiply
   9,706.88x = 14,557.21 × 3,131.53
4. Step 4: Simplify right side
   9,706.88x = 45,586,295.61
5. Step 5: Solve for x
   x = 45,586,295.61/9,706.88
6. Step 6: Final answer
   x = 4,696.29