Finding the Fourth Proportional to 16,290,560.72, 22,479,662.76 and 9,415,488.08

Step by Step Solution

1. Step 1: Write the proportion equation
   16,290,560.72 : 22,479,662.76 = 9,415,488.08 : x
2. Step 2: Convert to fraction form
   16,290,560.72/22,479,662.76 = 9,415,488.08/x
3. Step 3: Cross multiply
   16,290,560.72x = 22,479,662.76 × 9,415,488.08
4. Step 4: Simplify right side
   16,290,560.72x = 211,656,996,759,199.91
5. Step 5: Solve for x
   x = 211,656,996,759,199.91/16,290,560.72
6. Step 6: Final answer
   x = 12,992,615.81