Finding the Fourth Proportional to 10,053.72, 13,873.52 and 5,577.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,053.72 : 13,873.52 = 5,577.21 : x
2. Step 2: Convert to fraction form
   10,053.72/13,873.52 = 5,577.21/x
3. Step 3: Cross multiply
   10,053.72x = 13,873.52 × 5,577.21
4. Step 4: Simplify right side
   10,053.72x = 77,375,548.42
5. Step 5: Solve for x
   x = 77,375,548.42/10,053.72
6. Step 6: Final answer
   x = 7,696.21