Finding the Fourth Proportional to 12,765.90, 17,616.69 and 7,100.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,765.90 : 17,616.69 = 7,100.53 : x
2. Step 2: Convert to fraction form
   12,765.90/17,616.69 = 7,100.53/x
3. Step 3: Cross multiply
   12,765.90x = 17,616.69 × 7,100.53
4. Step 4: Simplify right side
   12,765.90x = 125,087,732.15
5. Step 5: Solve for x
   x = 125,087,732.15/12,765.90
6. Step 6: Final answer
   x = 9,798.58