Finding the Fourth Proportional to 19,782,381.72, 29,622,469.12 and 13,653,281.40

Step by Step Solution

1. Step 1: Write the proportion equation
   19,782,381.72 : 29,622,469.12 = 13,653,281.40 : x
2. Step 2: Convert to fraction form
   19,782,381.72/29,622,469.12 = 13,653,281.40/x
3. Step 3: Cross multiply
   19,782,381.72x = 29,622,469.12 × 13,653,281.40
4. Step 4: Simplify right side
   19,782,381.72x = 404,443,906,658,170.38
5. Step 5: Solve for x
   x = 404,443,906,658,170.38/19,782,381.72
6. Step 6: Final answer
   x = 20,444,651.83