Finding the Fourth Proportional to 13,290.56, 19,938.24 and 5,500

Step by Step Solution

1. Step 1: Write the proportion equation
   13,290.56 : 19,938.24 = 5,500 : x
2. Step 2: Convert to fraction form
   13,290.56/19,938.24 = 5,500/x
3. Step 3: Cross multiply
   13,290.56x = 19,938.24 × 5,500
4. Step 4: Simplify right side
   13,290.56x = 109,660,320.00
5. Step 5: Solve for x
   x = 109,660,320.00/13,290.56
6. Step 6: Final answer
   x = 8,250.99