Finding the Fourth Proportional to 12,943.56, 17,864.04 and 7,910.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,943.56 : 17,864.04 = 7,910.70 : x
2. Step 2: Convert to fraction form
   12,943.56/17,864.04 = 7,910.70/x
3. Step 3: Cross multiply
   12,943.56x = 17,864.04 × 7,910.70
4. Step 4: Simplify right side
   12,943.56x = 141,317,061.23
5. Step 5: Solve for x
   x = 141,317,061.23/12,943.56
6. Step 6: Final answer
   x = 10,917.94