Finding the Fourth Proportional to 21,060.51, 31,454.22 and 19,082.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,060.51 : 31,454.22 = 19,082.19 : x
2. Step 2: Convert to fraction form
   21,060.51/31,454.22 = 19,082.19/x
3. Step 3: Cross multiply
   21,060.51x = 31,454.22 × 19,082.19
4. Step 4: Simplify right side
   21,060.51x = 600,215,284.39
5. Step 5: Solve for x
   x = 600,215,284.39/21,060.51
6. Step 6: Final answer
   x = 28,499.56