Finding the Fourth Proportional to 9,990.56, 14,994.48 and 3,838.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990.56 : 14,994.48 = 3,838.88 : x
2. Step 2: Convert to fraction form
   9,990.56/14,994.48 = 3,838.88/x
3. Step 3: Cross multiply
   9,990.56x = 14,994.48 × 3,838.88
4. Step 4: Simplify right side
   9,990.56x = 57,562,009.38
5. Step 5: Solve for x
   x = 57,562,009.38/9,990.56
6. Step 6: Final answer
   x = 5,761.64