Finding the Fourth Proportional to 8,942,742.30, 12,340,789.11 and 5,222,212.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,942,742.30 : 12,340,789.11 = 5,222,212.50 : x
2. Step 2: Convert to fraction form
   8,942,742.30/12,340,789.11 = 5,222,212.50/x
3. Step 3: Cross multiply
   8,942,742.30x = 12,340,789.11 × 5,222,212.50
4. Step 4: Simplify right side
   8,942,742.30x = 64,446,223,150,105.88
5. Step 5: Solve for x
   x = 64,446,223,150,105.88/8,942,742.30
6. Step 6: Final answer
   x = 7,206,539.22