Finding the Fourth Proportional to 13,022.51, 19,528.29 and 5,123.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,022.51 : 19,528.29 = 5,123.79 : x
2. Step 2: Convert to fraction form
   13,022.51/19,528.29 = 5,123.79/x
3. Step 3: Cross multiply
   13,022.51x = 19,528.29 × 5,123.79
4. Step 4: Simplify right side
   13,022.51x = 100,058,857.02
5. Step 5: Solve for x
   x = 100,058,857.02/13,022.51
6. Step 6: Final answer
   x = 7,683.53