Finding the Fourth Proportional to 22,931.34, 31,633.61 and 14,978.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,931.34 : 31,633.61 = 14,978.22 : x
2. Step 2: Convert to fraction form
   22,931.34/31,633.61 = 14,978.22/x
3. Step 3: Cross multiply
   22,931.34x = 31,633.61 × 14,978.22
4. Step 4: Simplify right side
   22,931.34x = 473,815,095.08
5. Step 5: Solve for x
   x = 473,815,095.08/22,931.34
6. Step 6: Final answer
   x = 20,662.34