Finding the Fourth Proportional to 9,671.42, 13,346.33 and 5,422.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,671.42 : 13,346.33 = 5,422.69 : x
2. Step 2: Convert to fraction form
   9,671.42/13,346.33 = 5,422.69/x
3. Step 3: Cross multiply
   9,671.42x = 13,346.33 × 5,422.69
4. Step 4: Simplify right side
   9,671.42x = 72,372,983.11
5. Step 5: Solve for x
   x = 72,372,983.11/9,671.42
6. Step 6: Final answer
   x = 7,483.18