Finding the Fourth Proportional to 22,354.35, 30,851.69 and 13,406.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,354.35 : 30,851.69 = 13,406.78 : x
2. Step 2: Convert to fraction form
   22,354.35/30,851.69 = 13,406.78/x
3. Step 3: Cross multiply
   22,354.35x = 30,851.69 × 13,406.78
4. Step 4: Simplify right side
   22,354.35x = 413,621,820.46
5. Step 5: Solve for x
   x = 413,621,820.46/22,354.35
6. Step 6: Final answer
   x = 18,502.97