Finding the Fourth Proportional to 9,160.79, 12,642.80 and 5,576.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,160.79 : 12,642.80 = 5,576.00 : x
2. Step 2: Convert to fraction form
   9,160.79/12,642.80 = 5,576.00/x
3. Step 3: Cross multiply
   9,160.79x = 12,642.80 × 5,576.00
4. Step 4: Simplify right side
   9,160.79x = 70,496,161.71
5. Step 5: Solve for x
   x = 70,496,161.71/9,160.79
6. Step 6: Final answer
   x = 7,695.43