Finding the Fourth Proportional to 5,876.78, 8,111.31 and 3,777.26

Step by Step Solution

1. Step 1: Write the proportion equation
   5,876.78 : 8,111.31 = 3,777.26 : x
2. Step 2: Convert to fraction form
   5,876.78/8,111.31 = 3,777.26/x
3. Step 3: Cross multiply
   5,876.78x = 8,111.31 × 3,777.26
4. Step 4: Simplify right side
   5,876.78x = 30,638,526.81
5. Step 5: Solve for x
   x = 30,638,526.81/5,876.78
6. Step 6: Final answer
   x = 5,213.49