Finding the Fourth Proportional to 13,385.58, 18,471.84 and 7,417.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,385.58 : 18,471.84 = 7,417.23 : x
2. Step 2: Convert to fraction form
   13,385.58/18,471.84 = 7,417.23/x
3. Step 3: Cross multiply
   13,385.58x = 18,471.84 × 7,417.23
4. Step 4: Simplify right side
   13,385.58x = 137,009,885.80
5. Step 5: Solve for x
   x = 137,009,885.80/13,385.58
6. Step 6: Final answer
   x = 10,235.63