Finding the Fourth Proportional to 22,692.32, 31,315.68 and 12,756.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,692.32 : 31,315.68 = 12,756.32 : x
2. Step 2: Convert to fraction form
   22,692.32/31,315.68 = 12,756.32/x
3. Step 3: Cross multiply
   22,692.32x = 31,315.68 × 12,756.32
4. Step 4: Simplify right side
   22,692.32x = 399,472,835.10
5. Step 5: Solve for x
   x = 399,472,835.10/22,692.32
6. Step 6: Final answer
   x = 17,603.88