Finding the Fourth Proportional to 12,675.60, 17,489.52 and 7,958.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,675.60 : 17,489.52 = 7,958.16 : x
2. Step 2: Convert to fraction form
   12,675.60/17,489.52 = 7,958.16/x
3. Step 3: Cross multiply
   12,675.60x = 17,489.52 × 7,958.16
4. Step 4: Simplify right side
   12,675.60x = 139,184,398.48
5. Step 5: Solve for x
   x = 139,184,398.48/12,675.60
6. Step 6: Final answer
   x = 10,980.50