Finding the Fourth Proportional to 43,607.33, 65,412.59 and 12,019.91

Step by Step Solution

1. Step 1: Write the proportion equation
   43,607.33 : 65,412.59 = 12,019.91 : x
2. Step 2: Convert to fraction form
   43,607.33/65,412.59 = 12,019.91/x
3. Step 3: Cross multiply
   43,607.33x = 65,412.59 × 12,019.91
4. Step 4: Simplify right side
   43,607.33x = 786,253,057.50
5. Step 5: Solve for x
   x = 786,253,057.50/43,607.33
6. Step 6: Final answer
   x = 18,030.30