Finding the Fourth Proportional to 52,228.32, 72,074.34 and 28,355.91

Step by Step Solution

1. Step 1: Write the proportion equation
   52,228.32 : 72,074.34 = 28,355.91 : x
2. Step 2: Convert to fraction form
   52,228.32/72,074.34 = 28,355.91/x
3. Step 3: Cross multiply
   52,228.32x = 72,074.34 × 28,355.91
4. Step 4: Simplify right side
   52,228.32x = 2,043,733,498.35
5. Step 5: Solve for x
   x = 2,043,733,498.35/52,228.32
6. Step 6: Final answer
   x = 39,130.75