Finding the Fourth Proportional to 21,320.48, 29,413.86 and 12,366.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,320.48 : 29,413.86 = 12,366.38 : x
2. Step 2: Convert to fraction form
   21,320.48/29,413.86 = 12,366.38/x
3. Step 3: Cross multiply
   21,320.48x = 29,413.86 × 12,366.38
4. Step 4: Simplify right side
   21,320.48x = 363,742,970.03
5. Step 5: Solve for x
   x = 363,742,970.03/21,320.48
6. Step 6: Final answer
   x = 17,060.73