Finding the Fourth Proportional to 21,908,667.85, 32,865,990.98 and 9,126,183.20

Step by Step Solution

1. Step 1: Write the proportion equation
   21,908,667.85 : 32,865,990.98 = 9,126,183.20 : x
2. Step 2: Convert to fraction form
   21,908,667.85/32,865,990.98 = 9,126,183.20/x
3. Step 3: Cross multiply
   21,908,667.85x = 32,865,990.98 × 9,126,183.20
4. Step 4: Simplify right side
   21,908,667.85x = 299,941,054,523,066.69
5. Step 5: Solve for x
   x = 299,941,054,523,066.69/21,908,667.85
6. Step 6: Final answer
   x = 13,690,519.96