Finding the Fourth Proportional to 38,384.42, 57,572.06 and 13,422.56

Step by Step Solution

1. Step 1: Write the proportion equation
   38,384.42 : 57,572.06 = 13,422.56 : x
2. Step 2: Convert to fraction form
   38,384.42/57,572.06 = 13,422.56/x
3. Step 3: Cross multiply
   38,384.42x = 57,572.06 × 13,422.56
4. Step 4: Simplify right side
   38,384.42x = 772,764,429.67
5. Step 5: Solve for x
   x = 772,764,429.67/38,384.42
6. Step 6: Final answer
   x = 20,132.24