Finding the Fourth Proportional to 13,318.41, 19,972.42 and 4,993.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,318.41 : 19,972.42 = 4,993.89 : x
2. Step 2: Convert to fraction form
   13,318.41/19,972.42 = 4,993.89/x
3. Step 3: Cross multiply
   13,318.41x = 19,972.42 × 4,993.89
4. Step 4: Simplify right side
   13,318.41x = 99,740,068.51
5. Step 5: Solve for x
   x = 99,740,068.51/13,318.41
6. Step 6: Final answer
   x = 7,488.89