Finding the Fourth Proportional to 9,670.32, 13,345.20 and 5,478.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,670.32 : 13,345.20 = 5,478.48 : x
2. Step 2: Convert to fraction form
   9,670.32/13,345.20 = 5,478.48/x
3. Step 3: Cross multiply
   9,670.32x = 13,345.20 × 5,478.48
4. Step 4: Simplify right side
   9,670.32x = 73,111,411.30
5. Step 5: Solve for x
   x = 73,111,411.30/9,670.32
6. Step 6: Final answer
   x = 7,560.39