Finding the Fourth Proportional to 23,216.51, 34,839.81 and 8,424.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,216.51 : 34,839.81 = 8,424.15 : x
2. Step 2: Convert to fraction form
   23,216.51/34,839.81 = 8,424.15/x
3. Step 3: Cross multiply
   23,216.51x = 34,839.81 × 8,424.15
4. Step 4: Simplify right side
   23,216.51x = 293,495,785.41
5. Step 5: Solve for x
   x = 293,495,785.41/23,216.51
6. Step 6: Final answer
   x = 12,641.69