Finding the Fourth Proportional to 13,386.03, 18,472.86 and 7,417.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,386.03 : 18,472.86 = 7,417.77 : x
2. Step 2: Convert to fraction form
   13,386.03/18,472.86 = 7,417.77/x
3. Step 3: Cross multiply
   13,386.03x = 18,472.86 × 7,417.77
4. Step 4: Simplify right side
   13,386.03x = 137,027,426.72
5. Step 5: Solve for x
   x = 137,027,426.72/13,386.03
6. Step 6: Final answer
   x = 10,236.60