Finding the Fourth Proportional to 21,342,081.69, 29,456,062.69 and 12,174,724.44

Step by Step Solution

1. Step 1: Write the proportion equation
   21,342,081.69 : 29,456,062.69 = 12,174,724.44 : x
2. Step 2: Convert to fraction form
   21,342,081.69/29,456,062.69 = 12,174,724.44/x
3. Step 3: Cross multiply
   21,342,081.69x = 29,456,062.69 × 12,174,724.44
4. Step 4: Simplify right side
   21,342,081.69x = 358,619,446,338,115.12
5. Step 5: Solve for x
   x = 358,619,446,338,115.12/21,342,081.69
6. Step 6: Final answer
   x = 16,803,395.82