Finding the Fourth Proportional to 9,350.72, 12,908.67 and 5,815.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,350.72 : 12,908.67 = 5,815.07 : x
2. Step 2: Convert to fraction form
   9,350.72/12,908.67 = 5,815.07/x
3. Step 3: Cross multiply
   9,350.72x = 12,908.67 × 5,815.07
4. Step 4: Simplify right side
   9,350.72x = 75,064,819.66
5. Step 5: Solve for x
   x = 75,064,819.66/9,350.72
6. Step 6: Final answer
   x = 8,027.70