Finding the Fourth Proportional to 12,775.90, 17,631.25 and 7,110.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,775.90 : 17,631.25 = 7,110.89 : x
2. Step 2: Convert to fraction form
   12,775.90/17,631.25 = 7,110.89/x
3. Step 3: Cross multiply
   12,775.90x = 17,631.25 × 7,110.89
4. Step 4: Simplify right side
   12,775.90x = 125,373,755.60
5. Step 5: Solve for x
   x = 125,373,755.60/12,775.90
6. Step 6: Final answer
   x = 9,813.31