Finding the Fourth Proportional to 10,649.45, 14,688.42 and 7,057.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,649.45 : 14,688.42 = 7,057.91 : x
2. Step 2: Convert to fraction form
   10,649.45/14,688.42 = 7,057.91/x
3. Step 3: Cross multiply
   10,649.45x = 14,688.42 × 7,057.91
4. Step 4: Simplify right side
   10,649.45x = 103,669,546.40
5. Step 5: Solve for x
   x = 103,669,546.40/10,649.45
6. Step 6: Final answer
   x = 9,734.73