Finding the Fourth Proportional to 13,061.72, 19,588.38 and 4,294.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.72 : 19,588.38 = 4,294.58 : x
2. Step 2: Convert to fraction form
   13,061.72/19,588.38 = 4,294.58/x
3. Step 3: Cross multiply
   13,061.72x = 19,588.38 × 4,294.58
4. Step 4: Simplify right side
   13,061.72x = 84,123,864.98
5. Step 5: Solve for x
   x = 84,123,864.98/13,061.72
6. Step 6: Final answer
   x = 6,440.49