Finding the Fourth Proportional to 9,645.72, 13,311.12 and 5,454

Step by Step Solution

1. Step 1: Write the proportion equation
   9,645.72 : 13,311.12 = 5,454 : x
2. Step 2: Convert to fraction form
   9,645.72/13,311.12 = 5,454/x
3. Step 3: Cross multiply
   9,645.72x = 13,311.12 × 5,454
4. Step 4: Simplify right side
   9,645.72x = 72,598,848.48
5. Step 5: Solve for x
   x = 72,598,848.48/9,645.72
6. Step 6: Final answer
   x = 7,526.53