Finding the Fourth Proportional to 10,877.01, 15,004.47 and 8,219.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,877.01 : 15,004.47 = 8,219.80 : x
2. Step 2: Convert to fraction form
   10,877.01/15,004.47 = 8,219.80/x
3. Step 3: Cross multiply
   10,877.01x = 15,004.47 × 8,219.80
4. Step 4: Simplify right side
   10,877.01x = 123,333,742.51
5. Step 5: Solve for x
   x = 123,333,742.51/10,877.01
6. Step 6: Final answer
   x = 11,338.94