Finding the Fourth Proportional to 10,419.27, 14,385.29 and 9,298.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,419.27 : 14,385.29 = 9,298.28 : x
2. Step 2: Convert to fraction form
   10,419.27/14,385.29 = 9,298.28/x
3. Step 3: Cross multiply
   10,419.27x = 14,385.29 × 9,298.28
4. Step 4: Simplify right side
   10,419.27x = 133,758,441.58
5. Step 5: Solve for x
   x = 133,758,441.58/10,419.27
6. Step 6: Final answer
   x = 12,837.61