Finding the Fourth Proportional to 9,966.41, 13,753.58 and 5,490.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,966.41 : 13,753.58 = 5,490.05 : x
2. Step 2: Convert to fraction form
   9,966.41/13,753.58 = 5,490.05/x
3. Step 3: Cross multiply
   9,966.41x = 13,753.58 × 5,490.05
4. Step 4: Simplify right side
   9,966.41x = 75,507,848.81
5. Step 5: Solve for x
   x = 75,507,848.81/9,966.41
6. Step 6: Final answer
   x = 7,576.24