Finding the Fourth Proportional to 12,578,086.86, 17,357,357.81 and 7,071,694.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,578,086.86 : 17,357,357.81 = 7,071,694.71 : x
2. Step 2: Convert to fraction form
   12,578,086.86/17,357,357.81 = 7,071,694.71/x
3. Step 3: Cross multiply
   12,578,086.86x = 17,357,357.81 × 7,071,694.71
4. Step 4: Simplify right side
   12,578,086.86x = 122,745,935,357,143.33
5. Step 5: Solve for x
   x = 122,745,935,357,143.33/12,578,086.86
6. Step 6: Final answer
   x = 9,758,712.65