Finding the Fourth Proportional to 22,700.32, 31,326.72 and 12,764.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,700.32 : 31,326.72 = 12,764.32 : x
2. Step 2: Convert to fraction form
   22,700.32/31,326.72 = 12,764.32/x
3. Step 3: Cross multiply
   22,700.32x = 31,326.72 × 12,764.32
4. Step 4: Simplify right side
   22,700.32x = 399,864,278.63
5. Step 5: Solve for x
   x = 399,864,278.63/22,700.32
6. Step 6: Final answer
   x = 17,614.92