Finding the Fourth Proportional to 34,902.45, 52,357.32 and 20,128.05

Step by Step Solution

1. Step 1: Write the proportion equation
   34,902.45 : 52,357.32 = 20,128.05 : x
2. Step 2: Convert to fraction form
   34,902.45/52,357.32 = 20,128.05/x
3. Step 3: Cross multiply
   34,902.45x = 52,357.32 × 20,128.05
4. Step 4: Simplify right side
   34,902.45x = 1,053,850,754.83
5. Step 5: Solve for x
   x = 1,053,850,754.83/34,902.45
6. Step 6: Final answer
   x = 30,194.18