Finding the Fourth Proportional to 11,870.15, 16,382.86 and 7,154.43

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.15 : 16,382.86 = 7,154.43 : x
2. Step 2: Convert to fraction form
   11,870.15/16,382.86 = 7,154.43/x
3. Step 3: Cross multiply
   11,870.15x = 16,382.86 × 7,154.43
4. Step 4: Simplify right side
   11,870.15x = 117,210,025.07
5. Step 5: Solve for x
   x = 117,210,025.07/11,870.15
6. Step 6: Final answer
   x = 9,874.35