Finding the Fourth Proportional to 22,583.55, 31,162.78 and 12,509.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,583.55 : 31,162.78 = 12,509.50 : x
2. Step 2: Convert to fraction form
   22,583.55/31,162.78 = 12,509.50/x
3. Step 3: Cross multiply
   22,583.55x = 31,162.78 × 12,509.50
4. Step 4: Simplify right side
   22,583.55x = 389,830,656.23
5. Step 5: Solve for x
   x = 389,830,656.23/22,583.55
6. Step 6: Final answer
   x = 17,261.71