Finding the Fourth Proportional to 9,641.76, 13,305.88 and 5,392.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,641.76 : 13,305.88 = 5,392.72 : x
2. Step 2: Convert to fraction form
   9,641.76/13,305.88 = 5,392.72/x
3. Step 3: Cross multiply
   9,641.76x = 13,305.88 × 5,392.72
4. Step 4: Simplify right side
   9,641.76x = 71,754,885.19
5. Step 5: Solve for x
   x = 71,754,885.19/9,641.76
6. Step 6: Final answer
   x = 7,442.09