Finding the Fourth Proportional to 11,123.39, 16,680.54 and 5,570.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,123.39 : 16,680.54 = 5,570.12 : x
2. Step 2: Convert to fraction form
   11,123.39/16,680.54 = 5,570.12/x
3. Step 3: Cross multiply
   11,123.39x = 16,680.54 × 5,570.12
4. Step 4: Simplify right side
   11,123.39x = 92,912,609.46
5. Step 5: Solve for x
   x = 92,912,609.46/11,123.39
6. Step 6: Final answer
   x = 8,352.90