Finding the Fourth Proportional to 13,340.24, 20,012.56 and 5,549.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,340.24 : 20,012.56 = 5,549.60 : x
2. Step 2: Convert to fraction form
   13,340.24/20,012.56 = 5,549.60/x
3. Step 3: Cross multiply
   13,340.24x = 20,012.56 × 5,549.60
4. Step 4: Simplify right side
   13,340.24x = 111,061,702.98
5. Step 5: Solve for x
   x = 111,061,702.98/13,340.24
6. Step 6: Final answer
   x = 8,325.32