Finding the Fourth Proportional to 11,856.22, 17,789.12 and 5,277.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,856.22 : 17,789.12 = 5,277.91 : x
2. Step 2: Convert to fraction form
   11,856.22/17,789.12 = 5,277.91/x
3. Step 3: Cross multiply
   11,856.22x = 17,789.12 × 5,277.91
4. Step 4: Simplify right side
   11,856.22x = 93,889,374.34
5. Step 5: Solve for x
   x = 93,889,374.34/11,856.22
6. Step 6: Final answer
   x = 7,919.00