Finding the Fourth Proportional to 5,146.76, 7,106.00 and 3,890.45

Step by Step Solution

1. Step 1: Write the proportion equation
   5,146.76 : 7,106.00 = 3,890.45 : x
2. Step 2: Convert to fraction form
   5,146.76/7,106.00 = 3,890.45/x
3. Step 3: Cross multiply
   5,146.76x = 7,106.00 × 3,890.45
4. Step 4: Simplify right side
   5,146.76x = 27,645,482.72
5. Step 5: Solve for x
   x = 27,645,482.72/5,146.76
6. Step 6: Final answer
   x = 5,371.44