Finding the Fourth Proportional to 10,748.79, 16,127.81 and 5,558.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,748.79 : 16,127.81 = 5,558.31 : x
2. Step 2: Convert to fraction form
   10,748.79/16,127.81 = 5,558.31/x
3. Step 3: Cross multiply
   10,748.79x = 16,127.81 × 5,558.31
4. Step 4: Simplify right side
   10,748.79x = 89,643,339.81
5. Step 5: Solve for x
   x = 89,643,339.81/10,748.79
6. Step 6: Final answer
   x = 8,339.85