Finding the Fourth Proportional to 11,155.16, 15,378.72 and 10,810.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,155.16 : 15,378.72 = 10,810.10 : x
2. Step 2: Convert to fraction form
   11,155.16/15,378.72 = 10,810.10/x
3. Step 3: Cross multiply
   11,155.16x = 15,378.72 × 10,810.10
4. Step 4: Simplify right side
   11,155.16x = 166,245,501.07
5. Step 5: Solve for x
   x = 166,245,501.07/11,155.16
6. Step 6: Final answer
   x = 14,903.01