Finding the Fourth Proportional to 3,637.86, 5,457.72 and 2,642.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,637.86 : 5,457.72 = 2,642.10 : x
2. Step 2: Convert to fraction form
   3,637.86/5,457.72 = 2,642.10/x
3. Step 3: Cross multiply
   3,637.86x = 5,457.72 × 2,642.10
4. Step 4: Simplify right side
   3,637.86x = 14,419,842.01
5. Step 5: Solve for x
   x = 14,419,842.01/3,637.86
6. Step 6: Final answer
   x = 3,963.83