Finding the Fourth Proportional to 10,620.90, 14,596.89 and 8,258.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620.90 : 14,596.89 = 8,258.94 : x
2. Step 2: Convert to fraction form
   10,620.90/14,596.89 = 8,258.94/x
3. Step 3: Cross multiply
   10,620.90x = 14,596.89 × 8,258.94
4. Step 4: Simplify right side
   10,620.90x = 120,554,838.70
5. Step 5: Solve for x
   x = 120,554,838.70/10,620.90
6. Step 6: Final answer
   x = 11,350.72