Finding the Fourth Proportional to 12,947.87, 17,861.06 and 10,696.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.87 : 17,861.06 = 10,696.43 : x
2. Step 2: Convert to fraction form
   12,947.87/17,861.06 = 10,696.43/x
3. Step 3: Cross multiply
   12,947.87x = 17,861.06 × 10,696.43
4. Step 4: Simplify right side
   12,947.87x = 191,049,524.53
5. Step 5: Solve for x
   x = 191,049,524.53/12,947.87
6. Step 6: Final answer
   x = 14,755.29