Finding the Fourth Proportional to 11,561.81, 17,345.45 and 3,770.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,561.81 : 17,345.45 = 3,770.63 : x
2. Step 2: Convert to fraction form
   11,561.81/17,345.45 = 3,770.63/x
3. Step 3: Cross multiply
   11,561.81x = 17,345.45 × 3,770.63
4. Step 4: Simplify right side
   11,561.81x = 65,403,196.83
5. Step 5: Solve for x
   x = 65,403,196.83/11,561.81
6. Step 6: Final answer
   x = 5,656.83