Finding the Fourth Proportional to 10,518.90, 14,524.83 and 9,397.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,518.90 : 14,524.83 = 9,397.86 : x
2. Step 2: Convert to fraction form
   10,518.90/14,524.83 = 9,397.86/x
3. Step 3: Cross multiply
   10,518.90x = 14,524.83 × 9,397.86
4. Step 4: Simplify right side
   10,518.90x = 136,502,318.86
5. Step 5: Solve for x
   x = 136,502,318.86/10,518.90
6. Step 6: Final answer
   x = 12,976.86