Finding the Fourth Proportional to 9,671.25, 13,345.61 and 5,479.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,671.25 : 13,345.61 = 5,479.41 : x
2. Step 2: Convert to fraction form
   9,671.25/13,345.61 = 5,479.41/x
3. Step 3: Cross multiply
   9,671.25x = 13,345.61 × 5,479.41
4. Step 4: Simplify right side
   9,671.25x = 73,126,041.49
5. Step 5: Solve for x
   x = 73,126,041.49/9,671.25
6. Step 6: Final answer
   x = 7,561.18