Finding the Fourth Proportional to 9,141.15, 12,611.19 and 5,556.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,141.15 : 12,611.19 = 5,556.70 : x
2. Step 2: Convert to fraction form
   9,141.15/12,611.19 = 5,556.70/x
3. Step 3: Cross multiply
   9,141.15x = 12,611.19 × 5,556.70
4. Step 4: Simplify right side
   9,141.15x = 70,076,636.07
5. Step 5: Solve for x
   x = 70,076,636.07/9,141.15
6. Step 6: Final answer
   x = 7,666.06