Finding the Fourth Proportional to 21,530,797.28, 32,259,636.72 and 12,993,194.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,530,797.28 : 32,259,636.72 = 12,993,194.24 : x
2. Step 2: Convert to fraction form
   21,530,797.28/32,259,636.72 = 12,993,194.24/x
3. Step 3: Cross multiply
   21,530,797.28x = 32,259,636.72 × 12,993,194.24
4. Step 4: Simplify right side
   21,530,797.28x = 419,155,726,014,796.50
5. Step 5: Solve for x
   x = 419,155,726,014,796.50/21,530,797.28
6. Step 6: Final answer
   x = 19,467,728.97