Finding the Fourth Proportional to 10,110.89, 15,150.98 and 7,155.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,110.89 : 15,150.98 = 7,155.37 : x
2. Step 2: Convert to fraction form
   10,110.89/15,150.98 = 7,155.37/x
3. Step 3: Cross multiply
   10,110.89x = 15,150.98 × 7,155.37
4. Step 4: Simplify right side
   10,110.89x = 108,410,904.59
5. Step 5: Solve for x
   x = 108,410,904.59/10,110.89
6. Step 6: Final answer
   x = 10,722.19