Finding the Fourth Proportional to 19,870.04, 29,805 and 5,078.96

Step by Step Solution

1. Step 1: Write the proportion equation
   19,870.04 : 29,805 = 5,078.96 : x
2. Step 2: Convert to fraction form
   19,870.04/29,805 = 5,078.96/x
3. Step 3: Cross multiply
   19,870.04x = 29,805 × 5,078.96
4. Step 4: Simplify right side
   19,870.04x = 151,378,402.80
5. Step 5: Solve for x
   x = 151,378,402.80/19,870.04
6. Step 6: Final answer
   x = 7,618.42