Finding the Fourth Proportional to 19,928.81, 27,501.95 and 10,976.59

Step by Step Solution

1. Step 1: Write the proportion equation
   19,928.81 : 27,501.95 = 10,976.59 : x
2. Step 2: Convert to fraction form
   19,928.81/27,501.95 = 10,976.59/x
3. Step 3: Cross multiply
   19,928.81x = 27,501.95 × 10,976.59
4. Step 4: Simplify right side
   19,928.81x = 301,877,588.04
5. Step 5: Solve for x
   x = 301,877,588.04/19,928.81
6. Step 6: Final answer
   x = 15,147.80