Finding the Fourth Proportional to 14,651.94, 21,989.72 and 7,634.10

Step by Step Solution

1. Step 1: Write the proportion equation
   14,651.94 : 21,989.72 = 7,634.10 : x
2. Step 2: Convert to fraction form
   14,651.94/21,989.72 = 7,634.10/x
3. Step 3: Cross multiply
   14,651.94x = 21,989.72 × 7,634.10
4. Step 4: Simplify right side
   14,651.94x = 167,871,721.45
5. Step 5: Solve for x
   x = 167,871,721.45/14,651.94
6. Step 6: Final answer
   x = 11,457.30