Finding the Fourth Proportional to 5,010.78, 7,505.25 and 2,818.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,010.78 : 7,505.25 = 2,818.38 : x
2. Step 2: Convert to fraction form
   5,010.78/7,505.25 = 2,818.38/x
3. Step 3: Cross multiply
   5,010.78x = 7,505.25 × 2,818.38
4. Step 4: Simplify right side
   5,010.78x = 21,152,646.50
5. Step 5: Solve for x
   x = 21,152,646.50/5,010.78
6. Step 6: Final answer
   x = 4,221.43