Finding the Fourth Proportional to 9,201.98, 12,705.89 and 7,074.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,201.98 : 12,705.89 = 7,074.21 : x
2. Step 2: Convert to fraction form
   9,201.98/12,705.89 = 7,074.21/x
3. Step 3: Cross multiply
   9,201.98x = 12,705.89 × 7,074.21
4. Step 4: Simplify right side
   9,201.98x = 89,884,134.10
5. Step 5: Solve for x
   x = 89,884,134.10/9,201.98
6. Step 6: Final answer
   x = 9,767.91