Finding the Fourth Proportional to 11,888.91, 17,833.82 and 5,315.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,888.91 : 17,833.82 = 5,315.15 : x
2. Step 2: Convert to fraction form
   11,888.91/17,833.82 = 5,315.15/x
3. Step 3: Cross multiply
   11,888.91x = 17,833.82 × 5,315.15
4. Step 4: Simplify right side
   11,888.91x = 94,789,446.38
5. Step 5: Solve for x
   x = 94,789,446.38/11,888.91
6. Step 6: Final answer
   x = 7,972.93