Finding the Fourth Proportional to 11,128.50, 16,671.89 and 5,575.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,128.50 : 16,671.89 = 5,575.34 : x
2. Step 2: Convert to fraction form
   11,128.50/16,671.89 = 5,575.34/x
3. Step 3: Cross multiply
   11,128.50x = 16,671.89 × 5,575.34
4. Step 4: Simplify right side
   11,128.50x = 92,951,510.81
5. Step 5: Solve for x
   x = 92,951,510.81/11,128.50
6. Step 6: Final answer
   x = 8,352.56