Finding the Fourth Proportional to 21,672,071.46, 32,503,132.62 and 12,920,826.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,672,071.46 : 32,503,132.62 = 12,920,826.27 : x
2. Step 2: Convert to fraction form
   21,672,071.46/32,503,132.62 = 12,920,826.27/x
3. Step 3: Cross multiply
   21,672,071.46x = 32,503,132.62 × 12,920,826.27
4. Step 4: Simplify right side
   21,672,071.46x = 419,967,329,813,789.94
5. Step 5: Solve for x
   x = 419,967,329,813,789.94/21,672,071.46
6. Step 6: Final answer
   x = 19,378,273.58