Finding the Fourth Proportional to 11,181.86, 16,761.78 and 5,342.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,181.86 : 16,761.78 = 5,342.57 : x
2. Step 2: Convert to fraction form
   11,181.86/16,761.78 = 5,342.57/x
3. Step 3: Cross multiply
   11,181.86x = 16,761.78 × 5,342.57
4. Step 4: Simplify right side
   11,181.86x = 89,550,899.17
5. Step 5: Solve for x
   x = 89,550,899.17/11,181.86
6. Step 6: Final answer
   x = 8,008.59