Finding the Fourth Proportional to 11,396,789.76, 15,726,128.94 and 9,079,559.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,396,789.76 : 15,726,128.94 = 9,079,559.40 : x
2. Step 2: Convert to fraction form
   11,396,789.76/15,726,128.94 = 9,079,559.40/x
3. Step 3: Cross multiply
   11,396,789.76x = 15,726,128.94 × 9,079,559.40
4. Step 4: Simplify right side
   11,396,789.76x = 142,786,321,842,789.03
5. Step 5: Solve for x
   x = 142,786,321,842,789.03/11,396,789.76
6. Step 6: Final answer
   x = 12,528,644.02