Finding the Fourth Proportional to 13,320.71, 19,975.37 and 4,994.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,320.71 : 19,975.37 = 4,994.96 : x
2. Step 2: Convert to fraction form
   13,320.71/19,975.37 = 4,994.96/x
3. Step 3: Cross multiply
   13,320.71x = 19,975.37 × 4,994.96
4. Step 4: Simplify right side
   13,320.71x = 99,776,049.28
5. Step 5: Solve for x
   x = 99,776,049.28/13,320.71
6. Step 6: Final answer
   x = 7,490.30