Finding the Fourth Proportional to 8,375,940.18, 12,574,541.52 and 7,121,739.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,375,940.18 : 12,574,541.52 = 7,121,739.42 : x
2. Step 2: Convert to fraction form
   8,375,940.18/12,574,541.52 = 7,121,739.42/x
3. Step 3: Cross multiply
   8,375,940.18x = 12,574,541.52 × 7,121,739.42
4. Step 4: Simplify right side
   8,375,940.18x = 89,552,608,031,410.72
5. Step 5: Solve for x
   x = 89,552,608,031,410.72/8,375,940.18
6. Step 6: Final answer
   x = 10,691,648.47