Finding the Fourth Proportional to 8,830.81, 12,186.48 and 5,053.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,830.81 : 12,186.48 = 5,053.78 : x
2. Step 2: Convert to fraction form
   8,830.81/12,186.48 = 5,053.78/x
3. Step 3: Cross multiply
   8,830.81x = 12,186.48 × 5,053.78
4. Step 4: Simplify right side
   8,830.81x = 61,587,788.89
5. Step 5: Solve for x
   x = 61,587,788.89/8,830.81
6. Step 6: Final answer
   x = 6,974.19