Finding the Fourth Proportional to 9,479.79, 13,081.41 and 5,445.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,479.79 : 13,081.41 = 5,445.80 : x
2. Step 2: Convert to fraction form
   9,479.79/13,081.41 = 5,445.80/x
3. Step 3: Cross multiply
   9,479.79x = 13,081.41 × 5,445.80
4. Step 4: Simplify right side
   9,479.79x = 71,238,677.17
5. Step 5: Solve for x
   x = 71,238,677.17/9,479.79
6. Step 6: Final answer
   x = 7,514.79