Finding the Fourth Proportional to 12,587.46, 17,372.34 and 8,607.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,587.46 : 17,372.34 = 8,607.12 : x
2. Step 2: Convert to fraction form
   12,587.46/17,372.34 = 8,607.12/x
3. Step 3: Cross multiply
   12,587.46x = 17,372.34 × 8,607.12
4. Step 4: Simplify right side
   12,587.46x = 149,525,815.06
5. Step 5: Solve for x
   x = 149,525,815.06/12,587.46
6. Step 6: Final answer
   x = 11,878.95