Finding the Fourth Proportional to 21,128,106.46, 31,694,300.22 and 7,293,262.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,128,106.46 : 31,694,300.22 = 7,293,262.05 : x
2. Step 2: Convert to fraction form
   21,128,106.46/31,694,300.22 = 7,293,262.05/x
3. Step 3: Cross multiply
   21,128,106.46x = 31,694,300.22 × 7,293,262.05
4. Step 4: Simplify right side
   21,128,106.46x = 231,154,836,995,832.62
5. Step 5: Solve for x
   x = 231,154,836,995,832.62/21,128,106.46
6. Step 6: Final answer
   x = 10,940,631.97