Finding the Fourth Proportional to 9,439.66, 13,026.31 and 5,665.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,439.66 : 13,026.31 = 5,665.06 : x
2. Step 2: Convert to fraction form
   9,439.66/13,026.31 = 5,665.06/x
3. Step 3: Cross multiply
   9,439.66x = 13,026.31 × 5,665.06
4. Step 4: Simplify right side
   9,439.66x = 73,794,827.73
5. Step 5: Solve for x
   x = 73,794,827.73/9,439.66
6. Step 6: Final answer
   x = 7,817.53