Finding the Fourth Proportional to 22,557.76, 31,099.88 and 18,509.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,557.76 : 31,099.88 = 18,509.76 : x
2. Step 2: Convert to fraction form
   22,557.76/31,099.88 = 18,509.76/x
3. Step 3: Cross multiply
   22,557.76x = 31,099.88 × 18,509.76
4. Step 4: Simplify right side
   22,557.76x = 575,651,314.83
5. Step 5: Solve for x
   x = 575,651,314.83/22,557.76
6. Step 6: Final answer
   x = 25,518.99