Finding the Fourth Proportional to 19,111.14, 28,666.01 and 5,071.21

Step by Step Solution

1. Step 1: Write the proportion equation
   19,111.14 : 28,666.01 = 5,071.21 : x
2. Step 2: Convert to fraction form
   19,111.14/28,666.01 = 5,071.21/x
3. Step 3: Cross multiply
   19,111.14x = 28,666.01 × 5,071.21
4. Step 4: Simplify right side
   19,111.14x = 145,371,297.59
5. Step 5: Solve for x
   x = 145,371,297.59/19,111.14
6. Step 6: Final answer
   x = 7,606.63