Finding the Fourth Proportional to 11,419.76, 15,751.32 and 7,443.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,419.76 : 15,751.32 = 7,443.20 : x
2. Step 2: Convert to fraction form
   11,419.76/15,751.32 = 7,443.20/x
3. Step 3: Cross multiply
   11,419.76x = 15,751.32 × 7,443.20
4. Step 4: Simplify right side
   11,419.76x = 117,240,225.02
5. Step 5: Solve for x
   x = 117,240,225.02/11,419.76
6. Step 6: Final answer
   x = 10,266.44