Finding the Fourth Proportional to 9,058.58, 12,496.59 and 6,407.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,058.58 : 12,496.59 = 6,407.45 : x
2. Step 2: Convert to fraction form
   9,058.58/12,496.59 = 6,407.45/x
3. Step 3: Cross multiply
   9,058.58x = 12,496.59 × 6,407.45
4. Step 4: Simplify right side
   9,058.58x = 80,071,243.56
5. Step 5: Solve for x
   x = 80,071,243.56/9,058.58
6. Step 6: Final answer
   x = 8,839.27