Finding the Fourth Proportional to 12,604.88, 17,387.88 and 7,888.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,604.88 : 17,387.88 = 7,888.16 : x
2. Step 2: Convert to fraction form
   12,604.88/17,387.88 = 7,888.16/x
3. Step 3: Cross multiply
   12,604.88x = 17,387.88 × 7,888.16
4. Step 4: Simplify right side
   12,604.88x = 137,158,379.50
5. Step 5: Solve for x
   x = 137,158,379.50/12,604.88
6. Step 6: Final answer
   x = 10,881.37