Finding the Fourth Proportional to 9,009.04, 12,437.96 and 8,451.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,009.04 : 12,437.96 = 8,451.28 : x
2. Step 2: Convert to fraction form
   9,009.04/12,437.96 = 8,451.28/x
3. Step 3: Cross multiply
   9,009.04x = 12,437.96 × 8,451.28
4. Step 4: Simplify right side
   9,009.04x = 105,116,682.59
5. Step 5: Solve for x
   x = 105,116,682.59/9,009.04
6. Step 6: Final answer
   x = 11,667.91