Finding the Fourth Proportional to 13,109.76, 18,093.32 and 7,445.92

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.76 : 18,093.32 = 7,445.92 : x
2. Step 2: Convert to fraction form
   13,109.76/18,093.32 = 7,445.92/x
3. Step 3: Cross multiply
   13,109.76x = 18,093.32 × 7,445.92
4. Step 4: Simplify right side
   13,109.76x = 134,721,413.25
5. Step 5: Solve for x
   x = 134,721,413.25/13,109.76
6. Step 6: Final answer
   x = 10,276.42