Finding the Fourth Proportional to 15,317.54, 21,118.82 and 10,003.94

Step by Step Solution

1. Step 1: Write the proportion equation
   15,317.54 : 21,118.82 = 10,003.94 : x
2. Step 2: Convert to fraction form
   15,317.54/21,118.82 = 10,003.94/x
3. Step 3: Cross multiply
   15,317.54x = 21,118.82 × 10,003.94
4. Step 4: Simplify right side
   15,317.54x = 211,271,408.15
5. Step 5: Solve for x
   x = 211,271,408.15/15,317.54
6. Step 6: Final answer
   x = 13,792.78