Finding the Fourth Proportional to 12,319.25, 18,483.46 and 7,392.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,319.25 : 18,483.46 = 7,392.42 : x
2. Step 2: Convert to fraction form
   12,319.25/18,483.46 = 7,392.42/x
3. Step 3: Cross multiply
   12,319.25x = 18,483.46 × 7,392.42
4. Step 4: Simplify right side
   12,319.25x = 136,637,499.37
5. Step 5: Solve for x
   x = 136,637,499.37/12,319.25
6. Step 6: Final answer
   x = 11,091.38