Finding the Fourth Proportional to 9,050.56, 12,478.13 and 5,858.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,050.56 : 12,478.13 = 5,858.20 : x
2. Step 2: Convert to fraction form
   9,050.56/12,478.13 = 5,858.20/x
3. Step 3: Cross multiply
   9,050.56x = 12,478.13 × 5,858.20
4. Step 4: Simplify right side
   9,050.56x = 73,099,381.17
5. Step 5: Solve for x
   x = 73,099,381.17/9,050.56
6. Step 6: Final answer
   x = 8,076.78