Finding the Fourth Proportional to 11,191.16, 15,444.56 and 7,407.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,191.16 : 15,444.56 = 7,407.81 : x
2. Step 2: Convert to fraction form
   11,191.16/15,444.56 = 7,407.81/x
3. Step 3: Cross multiply
   11,191.16x = 15,444.56 × 7,407.81
4. Step 4: Simplify right side
   11,191.16x = 114,410,366.01
5. Step 5: Solve for x
   x = 114,410,366.01/11,191.16
6. Step 6: Final answer
   x = 10,223.28