Finding the Fourth Proportional to 9,054.86, 12,486.83 and 7,064.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.86 : 12,486.83 = 7,064.69 : x
2. Step 2: Convert to fraction form
   9,054.86/12,486.83 = 7,064.69/x
3. Step 3: Cross multiply
   9,054.86x = 12,486.83 × 7,064.69
4. Step 4: Simplify right side
   9,054.86x = 88,215,485.28
5. Step 5: Solve for x
   x = 88,215,485.28/9,054.86
6. Step 6: Final answer
   x = 9,742.34