Finding the Fourth Proportional to 13,385.47, 18,472.69 and 7,417.01

Step by Step Solution

1. Step 1: Write the proportion equation
   13,385.47 : 18,472.69 = 7,417.01 : x
2. Step 2: Convert to fraction form
   13,385.47/18,472.69 = 7,417.01/x
3. Step 3: Cross multiply
   13,385.47x = 18,472.69 × 7,417.01
4. Step 4: Simplify right side
   13,385.47x = 137,012,089.37
5. Step 5: Solve for x
   x = 137,012,089.37/13,385.47
6. Step 6: Final answer
   x = 10,235.89