Finding the Fourth Proportional to 9,990.95, 13,787.33 and 5,514.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990.95 : 13,787.33 = 5,514.84 : x
2. Step 2: Convert to fraction form
   9,990.95/13,787.33 = 5,514.84/x
3. Step 3: Cross multiply
   9,990.95x = 13,787.33 × 5,514.84
4. Step 4: Simplify right side
   9,990.95x = 76,034,891.40
5. Step 5: Solve for x
   x = 76,034,891.40/9,990.95
6. Step 6: Final answer
   x = 7,610.38