Finding the Fourth Proportional to 9,054.74, 12,499.63 and 5,702.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.74 : 12,499.63 = 5,702.47 : x
2. Step 2: Convert to fraction form
   9,054.74/12,499.63 = 5,702.47/x
3. Step 3: Cross multiply
   9,054.74x = 12,499.63 × 5,702.47
4. Step 4: Simplify right side
   9,054.74x = 71,278,782.08
5. Step 5: Solve for x
   x = 71,278,782.08/9,054.74
6. Step 6: Final answer
   x = 7,871.99