Finding the Fourth Proportional to 10,095.55, 13,931.57 and 5,619.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,095.55 : 13,931.57 = 5,619.21 : x
2. Step 2: Convert to fraction form
   10,095.55/13,931.57 = 5,619.21/x
3. Step 3: Cross multiply
   10,095.55x = 13,931.57 × 5,619.21
4. Step 4: Simplify right side
   10,095.55x = 78,284,417.46
5. Step 5: Solve for x
   x = 78,284,417.46/10,095.55
6. Step 6: Final answer
   x = 7,754.35