Finding the Fourth Proportional to 12,568.48, 17,345.82 and 7,788.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,568.48 : 17,345.82 = 7,788.04 : x
2. Step 2: Convert to fraction form
   12,568.48/17,345.82 = 7,788.04/x
3. Step 3: Cross multiply
   12,568.48x = 17,345.82 × 7,788.04
4. Step 4: Simplify right side
   12,568.48x = 135,089,939.99
5. Step 5: Solve for x
   x = 135,089,939.99/12,568.48
6. Step 6: Final answer
   x = 10,748.31