Finding the Fourth Proportional to 10,412.72, 15,618.06 and 5,731.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,412.72 : 15,618.06 = 5,731.20 : x
2. Step 2: Convert to fraction form
   10,412.72/15,618.06 = 5,731.20/x
3. Step 3: Cross multiply
   10,412.72x = 15,618.06 × 5,731.20
4. Step 4: Simplify right side
   10,412.72x = 89,510,225.47
5. Step 5: Solve for x
   x = 89,510,225.47/10,412.72
6. Step 6: Final answer
   x = 8,596.24