Finding the Fourth Proportional to 52,714.20, 72,742.50 and 28,836.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,714.20 : 72,742.50 = 28,836.12 : x
2. Step 2: Convert to fraction form
   52,714.20/72,742.50 = 28,836.12/x
3. Step 3: Cross multiply
   52,714.20x = 72,742.50 × 28,836.12
4. Step 4: Simplify right side
   52,714.20x = 2,097,611,459.10
5. Step 5: Solve for x
   x = 2,097,611,459.10/52,714.20
6. Step 6: Final answer
   x = 39,792.15