Finding the Fourth Proportional to 9,998.69, 14,987.78 and 5,053.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,998.69 : 14,987.78 = 5,053.34 : x
2. Step 2: Convert to fraction form
   9,998.69/14,987.78 = 5,053.34/x
3. Step 3: Cross multiply
   9,998.69x = 14,987.78 × 5,053.34
4. Step 4: Simplify right side
   9,998.69x = 75,738,323.46
5. Step 5: Solve for x
   x = 75,738,323.46/9,998.69
6. Step 6: Final answer
   x = 7,574.82