Finding the Fourth Proportional to 9,999.15, 14,987.94 and 5,069.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,999.15 : 14,987.94 = 5,069.18 : x
2. Step 2: Convert to fraction form
   9,999.15/14,987.94 = 5,069.18/x
3. Step 3: Cross multiply
   9,999.15x = 14,987.94 × 5,069.18
4. Step 4: Simplify right side
   9,999.15x = 75,976,584.15
5. Step 5: Solve for x
   x = 75,976,584.15/9,999.15
6. Step 6: Final answer
   x = 7,598.31