Finding the Fourth Proportional to 10,933.30, 16,419.15 and 10,587.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,933.30 : 16,419.15 = 10,587.70 : x
2. Step 2: Convert to fraction form
   10,933.30/16,419.15 = 10,587.70/x
3. Step 3: Cross multiply
   10,933.30x = 16,419.15 × 10,587.70
4. Step 4: Simplify right side
   10,933.30x = 173,841,034.46
5. Step 5: Solve for x
   x = 173,841,034.46/10,933.30
6. Step 6: Final answer
   x = 15,900.14