Finding the Fourth Proportional to 13,317.86, 18,376.40 and 7,651.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,317.86 : 18,376.40 = 7,651.31 : x
2. Step 2: Convert to fraction form
   13,317.86/18,376.40 = 7,651.31/x
3. Step 3: Cross multiply
   13,317.86x = 18,376.40 × 7,651.31
4. Step 4: Simplify right side
   13,317.86x = 140,603,460.33
5. Step 5: Solve for x
   x = 140,603,460.33/13,317.86
6. Step 6: Final answer
   x = 10,557.51