Finding the Fourth Proportional to 10,368.72, 14,308.79 and 5,653

Step by Step Solution

1. Step 1: Write the proportion equation
   10,368.72 : 14,308.79 = 5,653 : x
2. Step 2: Convert to fraction form
   10,368.72/14,308.79 = 5,653/x
3. Step 3: Cross multiply
   10,368.72x = 14,308.79 × 5,653
4. Step 4: Simplify right side
   10,368.72x = 80,887,589.87
5. Step 5: Solve for x
   x = 80,887,589.87/10,368.72
6. Step 6: Final answer
   x = 7,801.12