Finding the Fourth Proportional to 10,078,739.31, 13,909,841.06 and 5,728,479.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078,739.31 : 13,909,841.06 = 5,728,479.56 : x
2. Step 2: Convert to fraction form
   10,078,739.31/13,909,841.06 = 5,728,479.56/x
3. Step 3: Cross multiply
   10,078,739.31x = 13,909,841.06 × 5,728,479.56
4. Step 4: Simplify right side
   10,078,739.31x = 79,682,240,096,867.12
5. Step 5: Solve for x
   x = 79,682,240,096,867.12/10,078,739.31
6. Step 6: Final answer
   x = 7,905,972.92