Finding the Fourth Proportional to 11,111.48, 16,652.42 and 5,480.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,111.48 : 16,652.42 = 5,480.54 : x
2. Step 2: Convert to fraction form
   11,111.48/16,652.42 = 5,480.54/x
3. Step 3: Cross multiply
   11,111.48x = 16,652.42 × 5,480.54
4. Step 4: Simplify right side
   11,111.48x = 91,264,253.91
5. Step 5: Solve for x
   x = 91,264,253.91/11,111.48
6. Step 6: Final answer
   x = 8,213.51