Finding the Fourth Proportional to 12,582.90, 17,365.37 and 7,547.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,582.90 : 17,365.37 = 7,547.31 : x
2. Step 2: Convert to fraction form
   12,582.90/17,365.37 = 7,547.31/x
3. Step 3: Cross multiply
   12,582.90x = 17,365.37 × 7,547.31
4. Step 4: Simplify right side
   12,582.90x = 131,061,792.92
5. Step 5: Solve for x
   x = 131,061,792.92/12,582.90
6. Step 6: Final answer
   x = 10,415.87