Finding the Fourth Proportional to 9,958.57, 13,742.42 and 5,870.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,958.57 : 13,742.42 = 5,870.32 : x
2. Step 2: Convert to fraction form
   9,958.57/13,742.42 = 5,870.32/x
3. Step 3: Cross multiply
   9,958.57x = 13,742.42 × 5,870.32
4. Step 4: Simplify right side
   9,958.57x = 80,672,339.27
5. Step 5: Solve for x
   x = 80,672,339.27/9,958.57
6. Step 6: Final answer
   x = 8,100.80