Finding the Fourth Proportional to 38,397.39, 52,987.59 and 21,401.55

Step by Step Solution

1. Step 1: Write the proportion equation
   38,397.39 : 52,987.59 = 21,401.55 : x
2. Step 2: Convert to fraction form
   38,397.39/52,987.59 = 21,401.55/x
3. Step 3: Cross multiply
   38,397.39x = 52,987.59 × 21,401.55
4. Step 4: Simplify right side
   38,397.39x = 1,134,016,556.76
5. Step 5: Solve for x
   x = 1,134,016,556.76/38,397.39
6. Step 6: Final answer
   x = 29,533.69