Finding the Fourth Proportional to 12,910.89, 17,833.74 and 9,963.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,910.89 : 17,833.74 = 9,963.18 : x
2. Step 2: Convert to fraction form
   12,910.89/17,833.74 = 9,963.18/x
3. Step 3: Cross multiply
   12,910.89x = 17,833.74 × 9,963.18
4. Step 4: Simplify right side
   12,910.89x = 177,680,761.69
5. Step 5: Solve for x
   x = 177,680,761.69/12,910.89
6. Step 6: Final answer
   x = 13,762.08