Finding the Fourth Proportional to 14,191.98, 21,289.18 and 5,870.40

Step by Step Solution

1. Step 1: Write the proportion equation
   14,191.98 : 21,289.18 = 5,870.40 : x
2. Step 2: Convert to fraction form
   14,191.98/21,289.18 = 5,870.40/x
3. Step 3: Cross multiply
   14,191.98x = 21,289.18 × 5,870.40
4. Step 4: Simplify right side
   14,191.98x = 124,976,002.27
5. Step 5: Solve for x
   x = 124,976,002.27/14,191.98
6. Step 6: Final answer
   x = 8,806.10