Finding the Fourth Proportional to 21,308,992.89, 29,414,406.83 and 13,967,298.87

Step by Step Solution

1. Step 1: Write the proportion equation
   21,308,992.89 : 29,414,406.83 = 13,967,298.87 : x
2. Step 2: Convert to fraction form
   21,308,992.89/29,414,406.83 = 13,967,298.87/x
3. Step 3: Cross multiply
   21,308,992.89x = 29,414,406.83 × 13,967,298.87
4. Step 4: Simplify right side
   21,308,992.89x = 410,839,811,278,379.25
5. Step 5: Solve for x
   x = 410,839,811,278,379.25/21,308,992.89
6. Step 6: Final answer
   x = 19,280,113.96