Finding the Fourth Proportional to 9,123.49, 13,685.57 and 4,124.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.49 : 13,685.57 = 4,124.91 : x
2. Step 2: Convert to fraction form
   9,123.49/13,685.57 = 4,124.91/x
3. Step 3: Cross multiply
   9,123.49x = 13,685.57 × 4,124.91
4. Step 4: Simplify right side
   9,123.49x = 56,451,744.55
5. Step 5: Solve for x
   x = 56,451,744.55/9,123.49
6. Step 6: Final answer
   x = 6,187.52