Finding the Fourth Proportional to 13,300.43, 18,356.25 and 7,636.95

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.43 : 18,356.25 = 7,636.95 : x
2. Step 2: Convert to fraction form
   13,300.43/18,356.25 = 7,636.95/x
3. Step 3: Cross multiply
   13,300.43x = 18,356.25 × 7,636.95
4. Step 4: Simplify right side
   13,300.43x = 140,185,792.08
5. Step 5: Solve for x
   x = 140,185,792.08/13,300.43
6. Step 6: Final answer
   x = 10,539.95