Finding the Fourth Proportional to 11,090.78, 16,642.55 and 4,517.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,090.78 : 16,642.55 = 4,517.02 : x
2. Step 2: Convert to fraction form
   11,090.78/16,642.55 = 4,517.02/x
3. Step 3: Cross multiply
   11,090.78x = 16,642.55 × 4,517.02
4. Step 4: Simplify right side
   11,090.78x = 75,174,737.89
5. Step 5: Solve for x
   x = 75,174,737.89/11,090.78
6. Step 6: Final answer
   x = 6,778.13