Finding the Fourth Proportional to 11,071.10, 16,610.70 and 5,223.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,071.10 : 16,610.70 = 5,223.30 : x
2. Step 2: Convert to fraction form
   11,071.10/16,610.70 = 5,223.30/x
3. Step 3: Cross multiply
   11,071.10x = 16,610.70 × 5,223.30
4. Step 4: Simplify right side
   11,071.10x = 86,762,669.31
5. Step 5: Solve for x
   x = 86,762,669.31/11,071.10
6. Step 6: Final answer
   x = 7,836.86