Finding the Fourth Proportional to 11,003.31, 16,505.48 and 3,507.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,003.31 : 16,505.48 = 3,507.61 : x
2. Step 2: Convert to fraction form
   11,003.31/16,505.48 = 3,507.61/x
3. Step 3: Cross multiply
   11,003.31x = 16,505.48 × 3,507.61
4. Step 4: Simplify right side
   11,003.31x = 57,894,786.70
5. Step 5: Solve for x
   x = 57,894,786.70/11,003.31
6. Step 6: Final answer
   x = 5,261.58