Finding the Fourth Proportional to 21,447.53, 32,175.59 and 7,408.07

Step by Step Solution

1. Step 1: Write the proportion equation
   21,447.53 : 32,175.59 = 7,408.07 : x
2. Step 2: Convert to fraction form
   21,447.53/32,175.59 = 7,408.07/x
3. Step 3: Cross multiply
   21,447.53x = 32,175.59 × 7,408.07
4. Step 4: Simplify right side
   21,447.53x = 238,358,945.75
5. Step 5: Solve for x
   x = 238,358,945.75/21,447.53
6. Step 6: Final answer
   x = 11,113.59