Finding the Fourth Proportional to 10,058.45, 15,080.78 and 5,118.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,058.45 : 15,080.78 = 5,118.53 : x
2. Step 2: Convert to fraction form
   10,058.45/15,080.78 = 5,118.53/x
3. Step 3: Cross multiply
   10,058.45x = 15,080.78 × 5,118.53
4. Step 4: Simplify right side
   10,058.45x = 77,191,362.25
5. Step 5: Solve for x
   x = 77,191,362.25/10,058.45
6. Step 6: Final answer
   x = 7,674.28