Finding the Fourth Proportional to 34,875.60, 48,128.52 and 20,536.05

Step by Step Solution

1. Step 1: Write the proportion equation
   34,875.60 : 48,128.52 = 20,536.05 : x
2. Step 2: Convert to fraction form
   34,875.60/48,128.52 = 20,536.05/x
3. Step 3: Cross multiply
   34,875.60x = 48,128.52 × 20,536.05
4. Step 4: Simplify right side
   34,875.60x = 988,369,693.15
5. Step 5: Solve for x
   x = 988,369,693.15/34,875.60
6. Step 6: Final answer
   x = 28,339.86