Finding the Fourth Proportional to 13,013.88, 19,522.32 and 4,577.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.88 : 19,522.32 = 4,577.79 : x
2. Step 2: Convert to fraction form
   13,013.88/19,522.32 = 4,577.79/x
3. Step 3: Cross multiply
   13,013.88x = 19,522.32 × 4,577.79
4. Step 4: Simplify right side
   13,013.88x = 89,369,081.27
5. Step 5: Solve for x
   x = 89,369,081.27/13,013.88
6. Step 6: Final answer
   x = 6,867.21