Finding the Fourth Proportional to 12,478.08, 17,210.88 and 8,493.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,478.08 : 17,210.88 = 8,493.12 : x
2. Step 2: Convert to fraction form
   12,478.08/17,210.88 = 8,493.12/x
3. Step 3: Cross multiply
   12,478.08x = 17,210.88 × 8,493.12
4. Step 4: Simplify right side
   12,478.08x = 146,174,069.15
5. Step 5: Solve for x
   x = 146,174,069.15/12,478.08
6. Step 6: Final answer
   x = 11,714.47