Finding the Fourth Proportional to 12,105.90, 18,133.32 and 5,537.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.90 : 18,133.32 = 5,537.61 : x
2. Step 2: Convert to fraction form
   12,105.90/18,133.32 = 5,537.61/x
3. Step 3: Cross multiply
   12,105.90x = 18,133.32 × 5,537.61
4. Step 4: Simplify right side
   12,105.90x = 100,415,254.17
5. Step 5: Solve for x
   x = 100,415,254.17/12,105.90
6. Step 6: Final answer
   x = 8,294.74