Finding the Fourth Proportional to 9,057.01, 12,495.72 and 5,279.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.01 : 12,495.72 = 5,279.32 : x
2. Step 2: Convert to fraction form
   9,057.01/12,495.72 = 5,279.32/x
3. Step 3: Cross multiply
   9,057.01x = 12,495.72 × 5,279.32
4. Step 4: Simplify right side
   9,057.01x = 65,968,904.51
5. Step 5: Solve for x
   x = 65,968,904.51/9,057.01
6. Step 6: Final answer
   x = 7,283.74