Finding the Fourth Proportional to 22,357.32, 30,851.55 and 13,400.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,357.32 : 30,851.55 = 13,400.34 : x
2. Step 2: Convert to fraction form
   22,357.32/30,851.55 = 13,400.34/x
3. Step 3: Cross multiply
   22,357.32x = 30,851.55 × 13,400.34
4. Step 4: Simplify right side
   22,357.32x = 413,421,259.53
5. Step 5: Solve for x
   x = 413,421,259.53/22,357.32
6. Step 6: Final answer
   x = 18,491.54