Finding the Fourth Proportional to 12,788.04, 17,643.78 and 7,410.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788.04 : 17,643.78 = 7,410.12 : x
2. Step 2: Convert to fraction form
   12,788.04/17,643.78 = 7,410.12/x
3. Step 3: Cross multiply
   12,788.04x = 17,643.78 × 7,410.12
4. Step 4: Simplify right side
   12,788.04x = 130,742,527.05
5. Step 5: Solve for x
   x = 130,742,527.05/12,788.04
6. Step 6: Final answer
   x = 10,223.81