Finding the Fourth Proportional to 10,561.30, 14,574.38 and 5,781.13

Step by Step Solution

1. Step 1: Write the proportion equation
   10,561.30 : 14,574.38 = 5,781.13 : x
2. Step 2: Convert to fraction form
   10,561.30/14,574.38 = 5,781.13/x
3. Step 3: Cross multiply
   10,561.30x = 14,574.38 × 5,781.13
4. Step 4: Simplify right side
   10,561.30x = 84,256,393.62
5. Step 5: Solve for x
   x = 84,256,393.62/10,561.30
6. Step 6: Final answer
   x = 7,977.84