Finding the Fourth Proportional to 6,516.18, 9,775.89 and 2,620.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,516.18 : 9,775.89 = 2,620.89 : x
2. Step 2: Convert to fraction form
   6,516.18/9,775.89 = 2,620.89/x
3. Step 3: Cross multiply
   6,516.18x = 9,775.89 × 2,620.89
4. Step 4: Simplify right side
   6,516.18x = 25,621,532.34
5. Step 5: Solve for x
   x = 25,621,532.34/6,516.18
6. Step 6: Final answer
   x = 3,931.99