Finding the Fourth Proportional to 10,698.55, 16,017.45 and 10,116.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,698.55 : 16,017.45 = 10,116.70 : x
2. Step 2: Convert to fraction form
   10,698.55/16,017.45 = 10,116.70/x
3. Step 3: Cross multiply
   10,698.55x = 16,017.45 × 10,116.70
4. Step 4: Simplify right side
   10,698.55x = 162,043,736.42
5. Step 5: Solve for x
   x = 162,043,736.42/10,698.55
6. Step 6: Final answer
   x = 15,146.33