Finding the Fourth Proportional to 31,635.90, 43,667.91 and 22,206.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,635.90 : 43,667.91 = 22,206.78 : x
2. Step 2: Convert to fraction form
   31,635.90/43,667.91 = 22,206.78/x
3. Step 3: Cross multiply
   31,635.90x = 43,667.91 × 22,206.78
4. Step 4: Simplify right side
   31,635.90x = 969,723,670.43
5. Step 5: Solve for x
   x = 969,723,670.43/31,635.90
6. Step 6: Final answer
   x = 30,652.63