Finding the Fourth Proportional to 9,672.06, 13,347.42 and 5,480.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,672.06 : 13,347.42 = 5,480.31 : x
2. Step 2: Convert to fraction form
   9,672.06/13,347.42 = 5,480.31/x
3. Step 3: Cross multiply
   9,672.06x = 13,347.42 × 5,480.31
4. Step 4: Simplify right side
   9,672.06x = 73,147,999.30
5. Step 5: Solve for x
   x = 73,147,999.30/9,672.06
6. Step 6: Final answer
   x = 7,562.81