Finding the Fourth Proportional to 13,393.96, 18,483.80 and 7,426.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,393.96 : 18,483.80 = 7,426.18 : x
2. Step 2: Convert to fraction form
   13,393.96/18,483.80 = 7,426.18/x
3. Step 3: Cross multiply
   13,393.96x = 18,483.80 × 7,426.18
4. Step 4: Simplify right side
   13,393.96x = 137,264,011.86
5. Step 5: Solve for x
   x = 137,264,011.86/13,393.96
6. Step 6: Final answer
   x = 10,248.20