Finding the Fourth Proportional to 10,064.72, 15,091.60 and 3,490.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,064.72 : 15,091.60 = 3,490.36 : x
2. Step 2: Convert to fraction form
   10,064.72/15,091.60 = 3,490.36/x
3. Step 3: Cross multiply
   10,064.72x = 15,091.60 × 3,490.36
4. Step 4: Simplify right side
   10,064.72x = 52,675,116.98
5. Step 5: Solve for x
   x = 52,675,116.98/10,064.72
6. Step 6: Final answer
   x = 5,233.64