Finding the Fourth Proportional to 13,519.83, 18,653.28 and 7,853.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,519.83 : 18,653.28 = 7,853.47 : x
2. Step 2: Convert to fraction form
   13,519.83/18,653.28 = 7,853.47/x
3. Step 3: Cross multiply
   13,519.83x = 18,653.28 × 7,853.47
4. Step 4: Simplify right side
   13,519.83x = 146,492,935.61
5. Step 5: Solve for x
   x = 146,492,935.61/13,519.83
6. Step 6: Final answer
   x = 10,835.42