Finding the Fourth Proportional to 19,866.72, 29,799.56 and 5,075.68

Step by Step Solution

1. Step 1: Write the proportion equation
   19,866.72 : 29,799.56 = 5,075.68 : x
2. Step 2: Convert to fraction form
   19,866.72/29,799.56 = 5,075.68/x
3. Step 3: Cross multiply
   19,866.72x = 29,799.56 × 5,075.68
4. Step 4: Simplify right side
   19,866.72x = 151,253,030.70
5. Step 5: Solve for x
   x = 151,253,030.70/19,866.72
6. Step 6: Final answer
   x = 7,613.39