Finding the Fourth Proportional to 12,440.61, 18,656.06 and 5,510.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440.61 : 18,656.06 = 5,510.25 : x
2. Step 2: Convert to fraction form
   12,440.61/18,656.06 = 5,510.25/x
3. Step 3: Cross multiply
   12,440.61x = 18,656.06 × 5,510.25
4. Step 4: Simplify right side
   12,440.61x = 102,799,527.06
5. Step 5: Solve for x
   x = 102,799,527.06/12,440.61
6. Step 6: Final answer
   x = 8,263.22