Finding the Fourth Proportional to 11,881.18, 17,826.07 and 5,561.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,881.18 : 17,826.07 = 5,561.61 : x
2. Step 2: Convert to fraction form
   11,881.18/17,826.07 = 5,561.61/x
3. Step 3: Cross multiply
   11,881.18x = 17,826.07 × 5,561.61
4. Step 4: Simplify right side
   11,881.18x = 99,141,649.17
5. Step 5: Solve for x
   x = 99,141,649.17/11,881.18
6. Step 6: Final answer
   x = 8,344.43