Finding the Fourth Proportional to 9,670.46, 13,345.23 and 5,478.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,670.46 : 13,345.23 = 5,478.71 : x
2. Step 2: Convert to fraction form
   9,670.46/13,345.23 = 5,478.71/x
3. Step 3: Cross multiply
   9,670.46x = 13,345.23 × 5,478.71
4. Step 4: Simplify right side
   9,670.46x = 73,114,578.33
5. Step 5: Solve for x
   x = 73,114,578.33/9,670.46
6. Step 6: Final answer
   x = 7,560.61