Finding the Fourth Proportional to 11,897,196.78, 16,418,229.96 and 6,464,688.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,897,196.78 : 16,418,229.96 = 6,464,688.78 : x
2. Step 2: Convert to fraction form
   11,897,196.78/16,418,229.96 = 6,464,688.78/x
3. Step 3: Cross multiply
   11,897,196.78x = 16,418,229.96 × 6,464,688.78
4. Step 4: Simplify right side
   11,897,196.78x = 106,138,747,009,871.86
5. Step 5: Solve for x
   x = 106,138,747,009,871.86/11,897,196.78
6. Step 6: Final answer
   x = 8,921,323.99