Finding the Fourth Proportional to 11,139.49, 16,699.98 and 5,871.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,139.49 : 16,699.98 = 5,871.56 : x
2. Step 2: Convert to fraction form
   11,139.49/16,699.98 = 5,871.56/x
3. Step 3: Cross multiply
   11,139.49x = 16,699.98 × 5,871.56
4. Step 4: Simplify right side
   11,139.49x = 98,054,851.07
5. Step 5: Solve for x
   x = 98,054,851.07/11,139.49
6. Step 6: Final answer
   x = 8,802.45