Finding the Fourth Proportional to 52,789.08, 72,845.82 and 28,911

Step by Step Solution

1. Step 1: Write the proportion equation
   52,789.08 : 72,845.82 = 28,911 : x
2. Step 2: Convert to fraction form
   52,789.08/72,845.82 = 28,911/x
3. Step 3: Cross multiply
   52,789.08x = 72,845.82 × 28,911
4. Step 4: Simplify right side
   52,789.08x = 2,106,045,502.02
5. Step 5: Solve for x
   x = 2,106,045,502.02/52,789.08
6. Step 6: Final answer
   x = 39,895.48