Finding the Fourth Proportional to 39,111.10, 58,666.57 and 11,031.10

Step by Step Solution

1. Step 1: Write the proportion equation
   39,111.10 : 58,666.57 = 11,031.10 : x
2. Step 2: Convert to fraction form
   39,111.10/58,666.57 = 11,031.10/x
3. Step 3: Cross multiply
   39,111.10x = 58,666.57 × 11,031.10
4. Step 4: Simplify right side
   39,111.10x = 647,156,800.33
5. Step 5: Solve for x
   x = 647,156,800.33/39,111.10
6. Step 6: Final answer
   x = 16,546.63