Finding the Fourth Proportional to 11,026.32, 15,216.34 and 5,990.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,026.32 : 15,216.34 = 5,990.50 : x
2. Step 2: Convert to fraction form
   11,026.32/15,216.34 = 5,990.50/x
3. Step 3: Cross multiply
   11,026.32x = 15,216.34 × 5,990.50
4. Step 4: Simplify right side
   11,026.32x = 91,153,484.77
5. Step 5: Solve for x
   x = 91,153,484.77/11,026.32
6. Step 6: Final answer
   x = 8,266.90