Finding the Fourth Proportional to 9,312.01, 12,850.79 and 5,063.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,312.01 : 12,850.79 = 5,063.31 : x
2. Step 2: Convert to fraction form
   9,312.01/12,850.79 = 5,063.31/x
3. Step 3: Cross multiply
   9,312.01x = 12,850.79 × 5,063.31
4. Step 4: Simplify right side
   9,312.01x = 65,067,533.51
5. Step 5: Solve for x
   x = 65,067,533.51/9,312.01
6. Step 6: Final answer
   x = 6,987.49