Finding the Fourth Proportional to 52,648.49, 72,654.80 and 28,775.34

Step by Step Solution

1. Step 1: Write the proportion equation
   52,648.49 : 72,654.80 = 28,775.34 : x
2. Step 2: Convert to fraction form
   52,648.49/72,654.80 = 28,775.34/x
3. Step 3: Cross multiply
   52,648.49x = 72,654.80 × 28,775.34
4. Step 4: Simplify right side
   52,648.49x = 2,090,666,572.63
5. Step 5: Solve for x
   x = 2,090,666,572.63/52,648.49
6. Step 6: Final answer
   x = 39,709.91