Finding the Fourth Proportional to 21,925,447.47, 30,256,345.94 and 12,135,910.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,925,447.47 : 30,256,345.94 = 12,135,910.59 : x
2. Step 2: Convert to fraction form
   21,925,447.47/30,256,345.94 = 12,135,910.59/x
3. Step 3: Cross multiply
   21,925,447.47x = 30,256,345.94 × 12,135,910.59
4. Step 4: Simplify right side
   21,925,447.47x = 367,188,309,047,269.94
5. Step 5: Solve for x
   x = 367,188,309,047,269.94/21,925,447.47
6. Step 6: Final answer
   x = 16,747,129.54