Finding the Fourth Proportional to 3,926.02, 5,417.40 and 2,528.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.02 : 5,417.40 = 2,528.50 : x
2. Step 2: Convert to fraction form
   3,926.02/5,417.40 = 2,528.50/x
3. Step 3: Cross multiply
   3,926.02x = 5,417.40 × 2,528.50
4. Step 4: Simplify right side
   3,926.02x = 13,697,895.90
5. Step 5: Solve for x
   x = 13,697,895.90/3,926.02
6. Step 6: Final answer
   x = 3,489.00