Finding the Fourth Proportional to 9,122.96, 12,590.81 and 5,144.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,122.96 : 12,590.81 = 5,144.00 : x
2. Step 2: Convert to fraction form
   9,122.96/12,590.81 = 5,144.00/x
3. Step 3: Cross multiply
   9,122.96x = 12,590.81 × 5,144.00
4. Step 4: Simplify right side
   9,122.96x = 64,767,057.26
5. Step 5: Solve for x
   x = 64,767,057.26/9,122.96
6. Step 6: Final answer
   x = 7,099.34