Finding the Fourth Proportional to 3,710.77, 5,118.59 and 2,912.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,710.77 : 5,118.59 = 2,912.89 : x
2. Step 2: Convert to fraction form
   3,710.77/5,118.59 = 2,912.89/x
3. Step 3: Cross multiply
   3,710.77x = 5,118.59 × 2,912.89
4. Step 4: Simplify right side
   3,710.77x = 14,909,889.63
5. Step 5: Solve for x
   x = 14,909,889.63/3,710.77
6. Step 6: Final answer
   x = 4,018.00