Finding the Fourth Proportional to 12,458.27, 17,188.93 and 7,151.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,458.27 : 17,188.93 = 7,151.15 : x
2. Step 2: Convert to fraction form
   12,458.27/17,188.93 = 7,151.15/x
3. Step 3: Cross multiply
   12,458.27x = 17,188.93 × 7,151.15
4. Step 4: Simplify right side
   12,458.27x = 122,920,616.77
5. Step 5: Solve for x
   x = 122,920,616.77/12,458.27
6. Step 6: Final answer
   x = 9,866.59