Finding the Fourth Proportional to 9,122.88, 12,588.82 and 5,144.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,122.88 : 12,588.82 = 5,144.98 : x
2. Step 2: Convert to fraction form
   9,122.88/12,588.82 = 5,144.98/x
3. Step 3: Cross multiply
   9,122.88x = 12,588.82 × 5,144.98
4. Step 4: Simplify right side
   9,122.88x = 64,769,227.12
5. Step 5: Solve for x
   x = 64,769,227.12/9,122.88
6. Step 6: Final answer
   x = 7,099.65