Finding the Fourth Proportional to 10,705.46, 14,758.70 and 9,229.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,705.46 : 14,758.70 = 9,229.10 : x
2. Step 2: Convert to fraction form
   10,705.46/14,758.70 = 9,229.10/x
3. Step 3: Cross multiply
   10,705.46x = 14,758.70 × 9,229.10
4. Step 4: Simplify right side
   10,705.46x = 136,209,518.17
5. Step 5: Solve for x
   x = 136,209,518.17/10,705.46
6. Step 6: Final answer
   x = 12,723.37