Finding the Fourth Proportional to 9,579.26, 13,219.25 and 5,387.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,579.26 : 13,219.25 = 5,387.51 : x
2. Step 2: Convert to fraction form
   9,579.26/13,219.25 = 5,387.51/x
3. Step 3: Cross multiply
   9,579.26x = 13,219.25 × 5,387.51
4. Step 4: Simplify right side
   9,579.26x = 71,218,748.53
5. Step 5: Solve for x
   x = 71,218,748.53/9,579.26
6. Step 6: Final answer
   x = 7,434.69