Finding the Fourth Proportional to 9,973.63, 13,763.12 and 5,724.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,973.63 : 13,763.12 = 5,724.47 : x
2. Step 2: Convert to fraction form
   9,973.63/13,763.12 = 5,724.47/x
3. Step 3: Cross multiply
   9,973.63x = 13,763.12 × 5,724.47
4. Step 4: Simplify right side
   9,973.63x = 78,786,573.33
5. Step 5: Solve for x
   x = 78,786,573.33/9,973.63
6. Step 6: Final answer
   x = 7,899.49