Finding the Fourth Proportional to 16,442,781.30, 24,628,742.55 and 13,608,429.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,442,781.30 : 24,628,742.55 = 13,608,429.30 : x
2. Step 2: Convert to fraction form
   16,442,781.30/24,628,742.55 = 13,608,429.30/x
3. Step 3: Cross multiply
   16,442,781.30x = 24,628,742.55 × 13,608,429.30
4. Step 4: Simplify right side
   16,442,781.30x = 335,158,501,739,576.75
5. Step 5: Solve for x
   x = 335,158,501,739,576.75/16,442,781.30
6. Step 6: Final answer
   x = 20,383,321.75