Finding the Fourth Proportional to 13,393.32, 18,483.23 and 7,425.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,393.32 : 18,483.23 = 7,425.55 : x
2. Step 2: Convert to fraction form
   13,393.32/18,483.23 = 7,425.55/x
3. Step 3: Cross multiply
   13,393.32x = 18,483.23 × 7,425.55
4. Step 4: Simplify right side
   13,393.32x = 137,248,086.00
5. Step 5: Solve for x
   x = 137,248,086.00/13,393.32
6. Step 6: Final answer
   x = 10,247.50