Finding the Fourth Proportional to 19,870.60, 29,805.82 and 5,079.49

Step by Step Solution

1. Step 1: Write the proportion equation
   19,870.60 : 29,805.82 = 5,079.49 : x
2. Step 2: Convert to fraction form
   19,870.60/29,805.82 = 5,079.49/x
3. Step 3: Cross multiply
   19,870.60x = 29,805.82 × 5,079.49
4. Step 4: Simplify right side
   19,870.60x = 151,398,364.63
5. Step 5: Solve for x
   x = 151,398,364.63/19,870.60
6. Step 6: Final answer
   x = 7,619.21