Finding the Fourth Proportional to 9,109,704.96, 12,572,642.88 and 5,242,147.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,109,704.96 : 12,572,642.88 = 5,242,147.20 : x
2. Step 2: Convert to fraction form
   9,109,704.96/12,572,642.88 = 5,242,147.20/x
3. Step 3: Cross multiply
   9,109,704.96x = 12,572,642.88 × 5,242,147.20
4. Step 4: Simplify right side
   9,109,704.96x = 65,907,644,669,991.95
5. Step 5: Solve for x
   x = 65,907,644,669,991.95/9,109,704.96
6. Step 6: Final answer
   x = 7,234,882.46