Finding the Fourth Proportional to 13,648.69, 18,836.28 and 7,679.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,648.69 : 18,836.28 = 7,679.98 : x
2. Step 2: Convert to fraction form
   13,648.69/18,836.28 = 7,679.98/x
3. Step 3: Cross multiply
   13,648.69x = 18,836.28 × 7,679.98
4. Step 4: Simplify right side
   13,648.69x = 144,662,253.67
5. Step 5: Solve for x
   x = 144,662,253.67/13,648.69
6. Step 6: Final answer
   x = 10,598.98