Finding the Fourth Proportional to 21,987,043.99, 30,342,156.46 and 12,197,488.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,987,043.99 : 30,342,156.46 = 12,197,488.28 : x
2. Step 2: Convert to fraction form
   21,987,043.99/30,342,156.46 = 12,197,488.28/x
3. Step 3: Cross multiply
   21,987,043.99x = 30,342,156.46 × 12,197,488.28
4. Step 4: Simplify right side
   21,987,043.99x = 370,098,097,628,571.81
5. Step 5: Solve for x
   x = 370,098,097,628,571.81/21,987,043.99
6. Step 6: Final answer
   x = 16,832,553.65