Finding the Fourth Proportional to 12,494.21, 17,235.52 and 8,461.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.21 : 17,235.52 = 8,461.15 : x
2. Step 2: Convert to fraction form
   12,494.21/17,235.52 = 8,461.15/x
3. Step 3: Cross multiply
   12,494.21x = 17,235.52 × 8,461.15
4. Step 4: Simplify right side
   12,494.21x = 145,832,255.81
5. Step 5: Solve for x
   x = 145,832,255.81/12,494.21
6. Step 6: Final answer
   x = 11,671.99