Finding the Fourth Proportional to 9,471.96, 13,026.69 and 8,290.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,471.96 : 13,026.69 = 8,290.98 : x
2. Step 2: Convert to fraction form
   9,471.96/13,026.69 = 8,290.98/x
3. Step 3: Cross multiply
   9,471.96x = 13,026.69 × 8,290.98
4. Step 4: Simplify right side
   9,471.96x = 108,004,026.26
5. Step 5: Solve for x
   x = 108,004,026.26/9,471.96
6. Step 6: Final answer
   x = 11,402.50