Finding the Fourth Proportional to 12,115,912.15, 18,141,675.58 and 7,317,109.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,115,912.15 : 18,141,675.58 = 7,317,109.27 : x
2. Step 2: Convert to fraction form
   12,115,912.15/18,141,675.58 = 7,317,109.27/x
3. Step 3: Cross multiply
   12,115,912.15x = 18,141,675.58 × 7,317,109.27
4. Step 4: Simplify right side
   12,115,912.15x = 132,744,622,432,456.69
5. Step 5: Solve for x
   x = 132,744,622,432,456.69/12,115,912.15
6. Step 6: Final answer
   x = 10,956,221.94