Finding the Fourth Proportional to 13,385.48, 18,471.94 and 7,417.53

Step by Step Solution

1. Step 1: Write the proportion equation
   13,385.48 : 18,471.94 = 7,417.53 : x
2. Step 2: Convert to fraction form
   13,385.48/18,471.94 = 7,417.53/x
3. Step 3: Cross multiply
   13,385.48x = 18,471.94 × 7,417.53
4. Step 4: Simplify right side
   13,385.48x = 137,016,150.56
5. Step 5: Solve for x
   x = 137,016,150.56/13,385.48
6. Step 6: Final answer
   x = 10,236.18