Finding the Fourth Proportional to 13,393.83, 18,483.92 and 7,426.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,393.83 : 18,483.92 = 7,426.05 : x
2. Step 2: Convert to fraction form
   13,393.83/18,483.92 = 7,426.05/x
3. Step 3: Cross multiply
   13,393.83x = 18,483.92 × 7,426.05
4. Step 4: Simplify right side
   13,393.83x = 137,262,476.99
5. Step 5: Solve for x
   x = 137,262,476.99/13,393.83
6. Step 6: Final answer
   x = 10,248.19