Finding the Fourth Proportional to 8,058.31, 11,111.47 and 5,070.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,058.31 : 11,111.47 = 5,070.49 : x
2. Step 2: Convert to fraction form
   8,058.31/11,111.47 = 5,070.49/x
3. Step 3: Cross multiply
   8,058.31x = 11,111.47 × 5,070.49
4. Step 4: Simplify right side
   8,058.31x = 56,340,597.52
5. Step 5: Solve for x
   x = 56,340,597.52/8,058.31
6. Step 6: Final answer
   x = 6,991.61