Finding the Fourth Proportional to 13,978.58, 19,302.10 and 9,283.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978.58 : 19,302.10 = 9,283.82 : x
2. Step 2: Convert to fraction form
   13,978.58/19,302.10 = 9,283.82/x
3. Step 3: Cross multiply
   13,978.58x = 19,302.10 × 9,283.82
4. Step 4: Simplify right side
   13,978.58x = 179,197,102.30
5. Step 5: Solve for x
   x = 179,197,102.30/13,978.58
6. Step 6: Final answer
   x = 12,819.41