Finding the Fourth Proportional to 12,540.04, 18,812.59 and 3,655.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,540.04 : 18,812.59 = 3,655.35 : x
2. Step 2: Convert to fraction form
   12,540.04/18,812.59 = 3,655.35/x
3. Step 3: Cross multiply
   12,540.04x = 18,812.59 × 3,655.35
4. Step 4: Simplify right side
   12,540.04x = 68,766,591.72
5. Step 5: Solve for x
   x = 68,766,591.72/12,540.04
6. Step 6: Final answer
   x = 5,483.76