Finding the Fourth Proportional to 21,005,694.99, 31,509,527.46 and 10,210,127.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,005,694.99 : 31,509,527.46 = 10,210,127.31 : x
2. Step 2: Convert to fraction form
   21,005,694.99/31,509,527.46 = 10,210,127.31/x
3. Step 3: Cross multiply
   21,005,694.99x = 31,509,527.46 × 10,210,127.31
4. Step 4: Simplify right side
   21,005,694.99x = 321,716,286,844,540.94
5. Step 5: Solve for x
   x = 321,716,286,844,540.94/21,005,694.99
6. Step 6: Final answer
   x = 15,315,669.73