Finding the Fourth Proportional to 9,771.71, 14,603.90 and 7,144.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,771.71 : 14,603.90 = 7,144.74 : x
2. Step 2: Convert to fraction form
   9,771.71/14,603.90 = 7,144.74/x
3. Step 3: Cross multiply
   9,771.71x = 14,603.90 × 7,144.74
4. Step 4: Simplify right side
   9,771.71x = 104,341,086.35
5. Step 5: Solve for x
   x = 104,341,086.35/9,771.71
6. Step 6: Final answer
   x = 10,677.88