Finding the Fourth Proportional to 13,897.76, 19,181.87 and 8,860.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,897.76 : 19,181.87 = 8,860.82 : x
2. Step 2: Convert to fraction form
   13,897.76/19,181.87 = 8,860.82/x
3. Step 3: Cross multiply
   13,897.76x = 19,181.87 × 8,860.82
4. Step 4: Simplify right side
   13,897.76x = 169,966,957.12
5. Step 5: Solve for x
   x = 169,966,957.12/13,897.76
6. Step 6: Final answer
   x = 12,229.81