Finding the Fourth Proportional to 21,128,026.54, 31,694,180.33 and 7,293,182.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,128,026.54 : 31,694,180.33 = 7,293,182.09 : x
2. Step 2: Convert to fraction form
   21,128,026.54/31,694,180.33 = 7,293,182.09/x
3. Step 3: Cross multiply
   21,128,026.54x = 31,694,180.33 × 7,293,182.09
4. Step 4: Simplify right side
   21,128,026.54x = 231,151,428,339,986.28
5. Step 5: Solve for x
   x = 231,151,428,339,986.28/21,128,026.54
6. Step 6: Final answer
   x = 10,940,512.02