Finding the Fourth Proportional to 11,890.56, 17,835.80 and 3,570.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,890.56 : 17,835.80 = 3,570.55 : x
2. Step 2: Convert to fraction form
   11,890.56/17,835.80 = 3,570.55/x
3. Step 3: Cross multiply
   11,890.56x = 17,835.80 × 3,570.55
4. Step 4: Simplify right side
   11,890.56x = 63,683,615.69
5. Step 5: Solve for x
   x = 63,683,615.69/11,890.56
6. Step 6: Final answer
   x = 5,355.81