Finding the Fourth Proportional to 38,401.04, 52,986.99 and 21,401.55

Step by Step Solution

1. Step 1: Write the proportion equation
   38,401.04 : 52,986.99 = 21,401.55 : x
2. Step 2: Convert to fraction form
   38,401.04/52,986.99 = 21,401.55/x
3. Step 3: Cross multiply
   38,401.04x = 52,986.99 × 21,401.55
4. Step 4: Simplify right side
   38,401.04x = 1,134,003,715.83
5. Step 5: Solve for x
   x = 1,134,003,715.83/38,401.04
6. Step 6: Final answer
   x = 29,530.55