Finding the Fourth Proportional to 13,630.88, 18,810.50 and 7,662.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,630.88 : 18,810.50 = 7,662.57 : x
2. Step 2: Convert to fraction form
   13,630.88/18,810.50 = 7,662.57/x
3. Step 3: Cross multiply
   13,630.88x = 18,810.50 × 7,662.57
4. Step 4: Simplify right side
   13,630.88x = 144,136,887.50
5. Step 5: Solve for x
   x = 144,136,887.50/13,630.88
6. Step 6: Final answer
   x = 10,574.29