Finding the Fourth Proportional to 11,911.80, 17,863.57 and 4,889.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,911.80 : 17,863.57 = 4,889.82 : x
2. Step 2: Convert to fraction form
   11,911.80/17,863.57 = 4,889.82/x
3. Step 3: Cross multiply
   11,911.80x = 17,863.57 × 4,889.82
4. Step 4: Simplify right side
   11,911.80x = 87,349,641.86
5. Step 5: Solve for x
   x = 87,349,641.86/11,911.80
6. Step 6: Final answer
   x = 7,333.03