Finding the Fourth Proportional to 9,673.76, 13,349.90 and 5,425.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,673.76 : 13,349.90 = 5,425.72 : x
2. Step 2: Convert to fraction form
   9,673.76/13,349.90 = 5,425.72/x
3. Step 3: Cross multiply
   9,673.76x = 13,349.90 × 5,425.72
4. Step 4: Simplify right side
   9,673.76x = 72,432,799.62
5. Step 5: Solve for x
   x = 72,432,799.62/9,673.76
6. Step 6: Final answer
   x = 7,487.55