Finding the Fourth Proportional to 9,392.35, 12,947.61 and 7,150.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,392.35 : 12,947.61 = 7,150.31 : x
2. Step 2: Convert to fraction form
   9,392.35/12,947.61 = 7,150.31/x
3. Step 3: Cross multiply
   9,392.35x = 12,947.61 × 7,150.31
4. Step 4: Simplify right side
   9,392.35x = 92,579,425.26
5. Step 5: Solve for x
   x = 92,579,425.26/9,392.35
6. Step 6: Final answer
   x = 9,856.90