Finding the Fourth Proportional to 10,123.38, 15,191.87 and 3,549.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123.38 : 15,191.87 = 3,549.60 : x
2. Step 2: Convert to fraction form
   10,123.38/15,191.87 = 3,549.60/x
3. Step 3: Cross multiply
   10,123.38x = 15,191.87 × 3,549.60
4. Step 4: Simplify right side
   10,123.38x = 53,925,044.00
5. Step 5: Solve for x
   x = 53,925,044.00/10,123.38
6. Step 6: Final answer
   x = 5,326.78