Finding the Fourth Proportional to 22,813.91, 31,482.86 and 12,742.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,813.91 : 31,482.86 = 12,742.50 : x
2. Step 2: Convert to fraction form
   22,813.91/31,482.86 = 12,742.50/x
3. Step 3: Cross multiply
   22,813.91x = 31,482.86 × 12,742.50
4. Step 4: Simplify right side
   22,813.91x = 401,170,375.41
5. Step 5: Solve for x
   x = 401,170,375.41/22,813.91
6. Step 6: Final answer
   x = 17,584.46