Finding the Fourth Proportional to 22,402.16, 30,911.72 and 13,447.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,402.16 : 30,911.72 = 13,447.76 : x
2. Step 2: Convert to fraction form
   22,402.16/30,911.72 = 13,447.76/x
3. Step 3: Cross multiply
   22,402.16x = 30,911.72 × 13,447.76
4. Step 4: Simplify right side
   22,402.16x = 415,693,391.75
5. Step 5: Solve for x
   x = 415,693,391.75/22,402.16
6. Step 6: Final answer
   x = 18,555.95