Finding the Fourth Proportional to 10,870.85, 14,993.61 and 7,289.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,870.85 : 14,993.61 = 7,289.86 : x
2. Step 2: Convert to fraction form
   10,870.85/14,993.61 = 7,289.86/x
3. Step 3: Cross multiply
   10,870.85x = 14,993.61 × 7,289.86
4. Step 4: Simplify right side
   10,870.85x = 109,301,317.79
5. Step 5: Solve for x
   x = 109,301,317.79/10,870.85
6. Step 6: Final answer
   x = 10,054.53