Finding the Fourth Proportional to 8,521.11, 12,783.59 and 2,598.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,521.11 : 12,783.59 = 2,598.52 : x
2. Step 2: Convert to fraction form
   8,521.11/12,783.59 = 2,598.52/x
3. Step 3: Cross multiply
   8,521.11x = 12,783.59 × 2,598.52
4. Step 4: Simplify right side
   8,521.11x = 33,218,401.29
5. Step 5: Solve for x
   x = 33,218,401.29/8,521.11
6. Step 6: Final answer
   x = 3,898.37