Finding the Fourth Proportional to 38,452.38, 53,064.28 and 21,685.38

Step by Step Solution

1. Step 1: Write the proportion equation
   38,452.38 : 53,064.28 = 21,685.38 : x
2. Step 2: Convert to fraction form
   38,452.38/53,064.28 = 21,685.38/x
3. Step 3: Cross multiply
   38,452.38x = 53,064.28 × 21,685.38
4. Step 4: Simplify right side
   38,452.38x = 1,150,719,076.23
5. Step 5: Solve for x
   x = 1,150,719,076.23/38,452.38
6. Step 6: Final answer
   x = 29,925.82