Finding the Fourth Proportional to 12,290.16, 18,423.56 and 7,835.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,290.16 : 18,423.56 = 7,835.32 : x
2. Step 2: Convert to fraction form
   12,290.16/18,423.56 = 7,835.32/x
3. Step 3: Cross multiply
   12,290.16x = 18,423.56 × 7,835.32
4. Step 4: Simplify right side
   12,290.16x = 144,354,488.14
5. Step 5: Solve for x
   x = 144,354,488.14/12,290.16
6. Step 6: Final answer
   x = 11,745.53