Finding the Fourth Proportional to 9,105.50, 13,655.21 and 3,557.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.50 : 13,655.21 = 3,557.40 : x
2. Step 2: Convert to fraction form
   9,105.50/13,655.21 = 3,557.40/x
3. Step 3: Cross multiply
   9,105.50x = 13,655.21 × 3,557.40
4. Step 4: Simplify right side
   9,105.50x = 48,577,026.27
5. Step 5: Solve for x
   x = 48,577,026.27/9,105.50
6. Step 6: Final answer
   x = 5,334.91