Finding the Fourth Proportional to 10,562.13, 15,853.59 and 7,781.01

Step by Step Solution

1. Step 1: Write the proportion equation
   10,562.13 : 15,853.59 = 7,781.01 : x
2. Step 2: Convert to fraction form
   10,562.13/15,853.59 = 7,781.01/x
3. Step 3: Cross multiply
   10,562.13x = 15,853.59 × 7,781.01
4. Step 4: Simplify right side
   10,562.13x = 123,356,942.33
5. Step 5: Solve for x
   x = 123,356,942.33/10,562.13
6. Step 6: Final answer
   x = 11,679.17