Finding the Fourth Proportional to 13,395.31, 18,484.72 and 7,426.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,395.31 : 18,484.72 = 7,426.62 : x
2. Step 2: Convert to fraction form
   13,395.31/18,484.72 = 7,426.62/x
3. Step 3: Cross multiply
   13,395.31x = 18,484.72 × 7,426.62
4. Step 4: Simplify right side
   13,395.31x = 137,278,991.25
5. Step 5: Solve for x
   x = 137,278,991.25/13,395.31
6. Step 6: Final answer
   x = 10,248.29