Finding the Fourth Proportional to 10,990.52, 16,488.18 and 6,057.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990.52 : 16,488.18 = 6,057.60 : x
2. Step 2: Convert to fraction form
   10,990.52/16,488.18 = 6,057.60/x
3. Step 3: Cross multiply
   10,990.52x = 16,488.18 × 6,057.60
4. Step 4: Simplify right side
   10,990.52x = 99,878,799.17
5. Step 5: Solve for x
   x = 99,878,799.17/10,990.52
6. Step 6: Final answer
   x = 9,087.72