Finding the Fourth Proportional to 22,858.50, 31,549.05 and 12,922.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,858.50 : 31,549.05 = 12,922.50 : x
2. Step 2: Convert to fraction form
   22,858.50/31,549.05 = 12,922.50/x
3. Step 3: Cross multiply
   22,858.50x = 31,549.05 × 12,922.50
4. Step 4: Simplify right side
   22,858.50x = 407,692,598.63
5. Step 5: Solve for x
   x = 407,692,598.63/22,858.50
6. Step 6: Final answer
   x = 17,835.49