Finding the Fourth Proportional to 13,290.42, 19,938.09 and 5,499.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,290.42 : 19,938.09 = 5,499.84 : x
2. Step 2: Convert to fraction form
   13,290.42/19,938.09 = 5,499.84/x
3. Step 3: Cross multiply
   13,290.42x = 19,938.09 × 5,499.84
4. Step 4: Simplify right side
   13,290.42x = 109,656,304.91
5. Step 5: Solve for x
   x = 109,656,304.91/13,290.42
6. Step 6: Final answer
   x = 8,250.78