Finding the Fourth Proportional to 21,463.76, 29,618.38 and 12,030.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,463.76 : 29,618.38 = 12,030.50 : x
2. Step 2: Convert to fraction form
   21,463.76/29,618.38 = 12,030.50/x
3. Step 3: Cross multiply
   21,463.76x = 29,618.38 × 12,030.50
4. Step 4: Simplify right side
   21,463.76x = 356,323,920.59
5. Step 5: Solve for x
   x = 356,323,920.59/21,463.76
6. Step 6: Final answer
   x = 16,601.19