Finding the Fourth Proportional to 13,402.31, 18,496.24 and 7,435.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,402.31 : 18,496.24 = 7,435.13 : x
2. Step 2: Convert to fraction form
   13,402.31/18,496.24 = 7,435.13/x
3. Step 3: Cross multiply
   13,402.31x = 18,496.24 × 7,435.13
4. Step 4: Simplify right side
   13,402.31x = 137,521,976.56
5. Step 5: Solve for x
   x = 137,521,976.56/13,402.31
6. Step 6: Final answer
   x = 10,261.07