Finding the Fourth Proportional to 12,409.61, 17,124.82 and 7,100.66

Step by Step Solution

1. Step 1: Write the proportion equation
   12,409.61 : 17,124.82 = 7,100.66 : x
2. Step 2: Convert to fraction form
   12,409.61/17,124.82 = 7,100.66/x
3. Step 3: Cross multiply
   12,409.61x = 17,124.82 × 7,100.66
4. Step 4: Simplify right side
   12,409.61x = 121,597,549.44
5. Step 5: Solve for x
   x = 121,597,549.44/12,409.61
6. Step 6: Final answer
   x = 9,798.66