Finding the Fourth Proportional to 21,150,719.05, 31,726,188.06 and 9,628,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,150,719.05 : 31,726,188.06 = 9,628,128.10 : x
2. Step 2: Convert to fraction form
   21,150,719.05/31,726,188.06 = 9,628,128.10/x
3. Step 3: Cross multiply
   21,150,719.05x = 31,726,188.06 × 9,628,128.10
4. Step 4: Simplify right side
   21,150,719.05x = 305,463,802,559,598.94
5. Step 5: Solve for x
   x = 305,463,802,559,598.94/21,150,719.05
6. Step 6: Final answer
   x = 14,442,241.98