Finding the Fourth Proportional to 10,072.18, 13,899.63 and 5,596.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,072.18 : 13,899.63 = 5,596.21 : x
2. Step 2: Convert to fraction form
   10,072.18/13,899.63 = 5,596.21/x
3. Step 3: Cross multiply
   10,072.18x = 13,899.63 × 5,596.21
4. Step 4: Simplify right side
   10,072.18x = 77,785,248.40
5. Step 5: Solve for x
   x = 77,785,248.40/10,072.18
6. Step 6: Final answer
   x = 7,722.78