Finding the Fourth Proportional to 16,820,493.20, 23,212,289.89 and 9,085,535.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,820,493.20 : 23,212,289.89 = 9,085,535.49 : x
2. Step 2: Convert to fraction form
   16,820,493.20/23,212,289.89 = 9,085,535.49/x
3. Step 3: Cross multiply
   16,820,493.20x = 23,212,289.89 × 9,085,535.49
4. Step 4: Simplify right side
   16,820,493.20x = 210,896,083,599,763.22
5. Step 5: Solve for x
   x = 210,896,083,599,763.22/16,820,493.20
6. Step 6: Final answer
   x = 12,538,043.99