Finding the Fourth Proportional to 11,004.31, 16,498.27 and 6,620.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,004.31 : 16,498.27 = 6,620.75 : x
2. Step 2: Convert to fraction form
   11,004.31/16,498.27 = 6,620.75/x
3. Step 3: Cross multiply
   11,004.31x = 16,498.27 × 6,620.75
4. Step 4: Simplify right side
   11,004.31x = 109,230,921.10
5. Step 5: Solve for x
   x = 109,230,921.10/11,004.31
6. Step 6: Final answer
   x = 9,926.19