Finding the Fourth Proportional to 10,058, 13,880.76 and 5,581.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,058 : 13,880.76 = 5,581.72 : x
2. Step 2: Convert to fraction form
   10,058/13,880.76 = 5,581.72/x
3. Step 3: Cross multiply
   10,058x = 13,880.76 × 5,581.72
4. Step 4: Simplify right side
   10,058x = 77,478,515.71
5. Step 5: Solve for x
   x = 77,478,515.71/10,058
6. Step 6: Final answer
   x = 7,703.17