Finding the Fourth Proportional to 52,690.64, 72,714.51 and 28,818.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,690.64 : 72,714.51 = 28,818.72 : x
2. Step 2: Convert to fraction form
   52,690.64/72,714.51 = 28,818.72/x
3. Step 3: Cross multiply
   52,690.64x = 72,714.51 × 28,818.72
4. Step 4: Simplify right side
   52,690.64x = 2,095,539,103.63
5. Step 5: Solve for x
   x = 2,095,539,103.63/52,690.64
6. Step 6: Final answer
   x = 39,770.62