Finding the Fourth Proportional to 9,009.74, 12,435.66 and 5,475.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,009.74 : 12,435.66 = 5,475.30 : x
2. Step 2: Convert to fraction form
   9,009.74/12,435.66 = 5,475.30/x
3. Step 3: Cross multiply
   9,009.74x = 12,435.66 × 5,475.30
4. Step 4: Simplify right side
   9,009.74x = 68,088,969.20
5. Step 5: Solve for x
   x = 68,088,969.20/9,009.74
6. Step 6: Final answer
   x = 7,557.26