Finding the Fourth Proportional to 10,139.25, 13,992.13 and 5,663.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139.25 : 13,992.13 = 5,663.00 : x
2. Step 2: Convert to fraction form
   10,139.25/13,992.13 = 5,663.00/x
3. Step 3: Cross multiply
   10,139.25x = 13,992.13 × 5,663.00
4. Step 4: Simplify right side
   10,139.25x = 79,237,474.25
5. Step 5: Solve for x
   x = 79,237,474.25/10,139.25
6. Step 6: Final answer
   x = 7,814.92