Finding the Fourth Proportional to 8,989.56, 13,484.38 and 3,146.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,989.56 : 13,484.38 = 3,146.17 : x
2. Step 2: Convert to fraction form
   8,989.56/13,484.38 = 3,146.17/x
3. Step 3: Cross multiply
   8,989.56x = 13,484.38 × 3,146.17
4. Step 4: Simplify right side
   8,989.56x = 42,424,151.82
5. Step 5: Solve for x
   x = 42,424,151.82/8,989.56
6. Step 6: Final answer
   x = 4,719.27