Finding the Fourth Proportional to 12,457.78, 18,691.64 and 5,062.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,457.78 : 18,691.64 = 5,062.82 : x
2. Step 2: Convert to fraction form
   12,457.78/18,691.64 = 5,062.82/x
3. Step 3: Cross multiply
   12,457.78x = 18,691.64 × 5,062.82
4. Step 4: Simplify right side
   12,457.78x = 94,632,328.02
5. Step 5: Solve for x
   x = 94,632,328.02/12,457.78
6. Step 6: Final answer
   x = 7,596.24