Finding the Fourth Proportional to 52,788.42, 72,849.15 and 28,916.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,788.42 : 72,849.15 = 28,916.10 : x
2. Step 2: Convert to fraction form
   52,788.42/72,849.15 = 28,916.10/x
3. Step 3: Cross multiply
   52,788.42x = 72,849.15 × 28,916.10
4. Step 4: Simplify right side
   52,788.42x = 2,106,513,306.32
5. Step 5: Solve for x
   x = 2,106,513,306.32/52,788.42
6. Step 6: Final answer
   x = 39,904.84