Finding the Fourth Proportional to 20,486,796.72, 30,752,072.04 and 8,820,947.12

Step by Step Solution

1. Step 1: Write the proportion equation
   20,486,796.72 : 30,752,072.04 = 8,820,947.12 : x
2. Step 2: Convert to fraction form
   20,486,796.72/30,752,072.04 = 8,820,947.12/x
3. Step 3: Cross multiply
   20,486,796.72x = 30,752,072.04 × 8,820,947.12
4. Step 4: Simplify right side
   20,486,796.72x = 271,262,401,295,270.50
5. Step 5: Solve for x
   x = 271,262,401,295,270.50/20,486,796.72
6. Step 6: Final answer
   x = 13,240,840.19