Finding the Fourth Proportional to 11,012.81, 15,197.78 and 5,977.07

Step by Step Solution

1. Step 1: Write the proportion equation
   11,012.81 : 15,197.78 = 5,977.07 : x
2. Step 2: Convert to fraction form
   11,012.81/15,197.78 = 5,977.07/x
3. Step 3: Cross multiply
   11,012.81x = 15,197.78 × 5,977.07
4. Step 4: Simplify right side
   11,012.81x = 90,838,255.31
5. Step 5: Solve for x
   x = 90,838,255.31/11,012.81
6. Step 6: Final answer
   x = 8,248.42