Finding the Fourth Proportional to 10,116.45, 15,154.62 and 4,772.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,116.45 : 15,154.62 = 4,772.31 : x
2. Step 2: Convert to fraction form
   10,116.45/15,154.62 = 4,772.31/x
3. Step 3: Cross multiply
   10,116.45x = 15,154.62 × 4,772.31
4. Step 4: Simplify right side
   10,116.45x = 72,322,544.57
5. Step 5: Solve for x
   x = 72,322,544.57/10,116.45
6. Step 6: Final answer
   x = 7,149.00