Finding the Fourth Proportional to 6,551.16, 9,826.56 and 1,620.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,551.16 : 9,826.56 = 1,620.69 : x
2. Step 2: Convert to fraction form
   6,551.16/9,826.56 = 1,620.69/x
3. Step 3: Cross multiply
   6,551.16x = 9,826.56 × 1,620.69
4. Step 4: Simplify right side
   6,551.16x = 15,925,807.53
5. Step 5: Solve for x
   x = 15,925,807.53/6,551.16
6. Step 6: Final answer
   x = 2,430.99