Finding the Fourth Proportional to 30,096.68, 45,137.33 and 12,339.86

Step by Step Solution

1. Step 1: Write the proportion equation
   30,096.68 : 45,137.33 = 12,339.86 : x
2. Step 2: Convert to fraction form
   30,096.68/45,137.33 = 12,339.86/x
3. Step 3: Cross multiply
   30,096.68x = 45,137.33 × 12,339.86
4. Step 4: Simplify right side
   30,096.68x = 556,988,271.27
5. Step 5: Solve for x
   x = 556,988,271.27/30,096.68
6. Step 6: Final answer
   x = 18,506.63