Finding the Fourth Proportional to 21,886.16, 30,200.52 and 12,453.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,886.16 : 30,200.52 = 12,453.84 : x
2. Step 2: Convert to fraction form
   21,886.16/30,200.52 = 12,453.84/x
3. Step 3: Cross multiply
   21,886.16x = 30,200.52 × 12,453.84
4. Step 4: Simplify right side
   21,886.16x = 376,112,444.00
5. Step 5: Solve for x
   x = 376,112,444.00/21,886.16
6. Step 6: Final answer
   x = 17,184.94