Finding the Fourth Proportional to 12,488.83, 17,237.34 and 7,950.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.83 : 17,237.34 = 7,950.55 : x
2. Step 2: Convert to fraction form
   12,488.83/17,237.34 = 7,950.55/x
3. Step 3: Cross multiply
   12,488.83x = 17,237.34 × 7,950.55
4. Step 4: Simplify right side
   12,488.83x = 137,046,333.54
5. Step 5: Solve for x
   x = 137,046,333.54/12,488.83
6. Step 6: Final answer
   x = 10,973.51