Finding the Fourth Proportional to 6,970,974.31, 10,456,469.61 and 2,178,688.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,970,974.31 : 10,456,469.61 = 2,178,688.69 : x
2. Step 2: Convert to fraction form
   6,970,974.31/10,456,469.61 = 2,178,688.69/x
3. Step 3: Cross multiply
   6,970,974.31x = 10,456,469.61 × 2,178,688.69
4. Step 4: Simplify right side
   6,970,974.31x = 22,781,392,076,635.71
5. Step 5: Solve for x
   x = 22,781,392,076,635.71/6,970,974.31
6. Step 6: Final answer
   x = 3,268,035.58