Finding the Fourth Proportional to 11,053.59, 16,558.17 and 5,490.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,053.59 : 16,558.17 = 5,490.10 : x
2. Step 2: Convert to fraction form
   11,053.59/16,558.17 = 5,490.10/x
3. Step 3: Cross multiply
   11,053.59x = 16,558.17 × 5,490.10
4. Step 4: Simplify right side
   11,053.59x = 90,906,009.12
5. Step 5: Solve for x
   x = 90,906,009.12/11,053.59
6. Step 6: Final answer
   x = 8,224.12