Finding the Fourth Proportional to 9,111.61, 13,661.94 and 3,558.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.61 : 13,661.94 = 3,558.43 : x
2. Step 2: Convert to fraction form
   9,111.61/13,661.94 = 3,558.43/x
3. Step 3: Cross multiply
   9,111.61x = 13,661.94 × 3,558.43
4. Step 4: Simplify right side
   9,111.61x = 48,615,057.15
5. Step 5: Solve for x
   x = 48,615,057.15/9,111.61
6. Step 6: Final answer
   x = 5,335.51