Finding the Fourth Proportional to 38,128.05, 52,618.41 and 21,132.27

Step by Step Solution

1. Step 1: Write the proportion equation
   38,128.05 : 52,618.41 = 21,132.27 : x
2. Step 2: Convert to fraction form
   38,128.05/52,618.41 = 21,132.27/x
3. Step 3: Cross multiply
   38,128.05x = 52,618.41 × 21,132.27
4. Step 4: Simplify right side
   38,128.05x = 1,111,946,447.09
5. Step 5: Solve for x
   x = 1,111,946,447.09/38,128.05
6. Step 6: Final answer
   x = 29,163.48