Finding the Fourth Proportional to 11,191.45, 15,445.02 and 7,408.03

Step by Step Solution

1. Step 1: Write the proportion equation
   11,191.45 : 15,445.02 = 7,408.03 : x
2. Step 2: Convert to fraction form
   11,191.45/15,445.02 = 7,408.03/x
3. Step 3: Cross multiply
   11,191.45x = 15,445.02 × 7,408.03
4. Step 4: Simplify right side
   11,191.45x = 114,417,171.51
5. Step 5: Solve for x
   x = 114,417,171.51/11,191.45
6. Step 6: Final answer
   x = 10,223.62