Finding the Fourth Proportional to 10,031.51, 13,843.98 and 5,555.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,031.51 : 13,843.98 = 5,555.75 : x
2. Step 2: Convert to fraction form
   10,031.51/13,843.98 = 5,555.75/x
3. Step 3: Cross multiply
   10,031.51x = 13,843.98 × 5,555.75
4. Step 4: Simplify right side
   10,031.51x = 76,913,691.89
5. Step 5: Solve for x
   x = 76,913,691.89/10,031.51
6. Step 6: Final answer
   x = 7,667.21