Finding the Fourth Proportional to 13,058.88, 18,026.16 and 7,756.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,058.88 : 18,026.16 = 7,756.32 : x
2. Step 2: Convert to fraction form
   13,058.88/18,026.16 = 7,756.32/x
3. Step 3: Cross multiply
   13,058.88x = 18,026.16 × 7,756.32
4. Step 4: Simplify right side
   13,058.88x = 139,816,665.33
5. Step 5: Solve for x
   x = 139,816,665.33/13,058.88
6. Step 6: Final answer
   x = 10,706.64