Finding the Fourth Proportional to 12,947.17, 17,868.46 and 7,914.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.17 : 17,868.46 = 7,914.33 : x
2. Step 2: Convert to fraction form
   12,947.17/17,868.46 = 7,914.33/x
3. Step 3: Cross multiply
   12,947.17x = 17,868.46 × 7,914.33
4. Step 4: Simplify right side
   12,947.17x = 141,416,945.47
5. Step 5: Solve for x
   x = 141,416,945.47/12,947.17
6. Step 6: Final answer
   x = 10,922.62