Finding the Fourth Proportional to 3,711.64, 5,123.10 and 3,655.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,711.64 : 5,123.10 = 3,655.48 : x
2. Step 2: Convert to fraction form
   3,711.64/5,123.10 = 3,655.48/x
3. Step 3: Cross multiply
   3,711.64x = 5,123.10 × 3,655.48
4. Step 4: Simplify right side
   3,711.64x = 18,727,389.59
5. Step 5: Solve for x
   x = 18,727,389.59/3,711.64
6. Step 6: Final answer
   x = 5,045.58