Finding the Fourth Proportional to 12,927.30, 19,358.55 and 10,335.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,927.30 : 19,358.55 = 10,335.30 : x
2. Step 2: Convert to fraction form
   12,927.30/19,358.55 = 10,335.30/x
3. Step 3: Cross multiply
   12,927.30x = 19,358.55 × 10,335.30
4. Step 4: Simplify right side
   12,927.30x = 200,076,421.82
5. Step 5: Solve for x
   x = 200,076,421.82/12,927.30
6. Step 6: Final answer
   x = 15,477.05