Finding the Fourth Proportional to 9,123.57, 12,592.35 and 5,144.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.57 : 12,592.35 = 5,144.76 : x
2. Step 2: Convert to fraction form
   9,123.57/12,592.35 = 5,144.76/x
3. Step 3: Cross multiply
   9,123.57x = 12,592.35 × 5,144.76
4. Step 4: Simplify right side
   9,123.57x = 64,784,618.59
5. Step 5: Solve for x
   x = 64,784,618.59/9,123.57
6. Step 6: Final answer
   x = 7,100.80