Finding the Fourth Proportional to 10,638.61, 14,677.31 and 10,622.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,638.61 : 14,677.31 = 10,622.21 : x
2. Step 2: Convert to fraction form
   10,638.61/14,677.31 = 10,622.21/x
3. Step 3: Cross multiply
   10,638.61x = 14,677.31 × 10,622.21
4. Step 4: Simplify right side
   10,638.61x = 155,905,422.22
5. Step 5: Solve for x
   x = 155,905,422.22/10,638.61
6. Step 6: Final answer
   x = 14,654.68