Finding the Fourth Proportional to 11,870.69, 16,370.71 and 10,191.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.69 : 16,370.71 = 10,191.56 : x
2. Step 2: Convert to fraction form
   11,870.69/16,370.71 = 10,191.56/x
3. Step 3: Cross multiply
   11,870.69x = 16,370.71 × 10,191.56
4. Step 4: Simplify right side
   11,870.69x = 166,842,965.88
5. Step 5: Solve for x
   x = 166,842,965.88/11,870.69
6. Step 6: Final answer
   x = 14,055.04