Finding the Fourth Proportional to 13,366.17, 18,446.00 and 7,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,366.17 : 18,446.00 = 7,398.50 : x
2. Step 2: Convert to fraction form
   13,366.17/18,446.00 = 7,398.50/x
3. Step 3: Cross multiply
   13,366.17x = 18,446.00 × 7,398.50
4. Step 4: Simplify right side
   13,366.17x = 136,472,601.78
5. Step 5: Solve for x
   x = 136,472,601.78/13,366.17
6. Step 6: Final answer
   x = 10,210.30