Finding the Fourth Proportional to 3,699.99, 5,100.57 and 2,579.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.99 : 5,100.57 = 2,579.22 : x
2. Step 2: Convert to fraction form
   3,699.99/5,100.57 = 2,579.22/x
3. Step 3: Cross multiply
   3,699.99x = 5,100.57 × 2,579.22
4. Step 4: Simplify right side
   3,699.99x = 13,155,492.16
5. Step 5: Solve for x
   x = 13,155,492.16/3,699.99
6. Step 6: Final answer
   x = 3,555.55