Finding the Fourth Proportional to 13,817.79, 19,068.57 and 7,530.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,817.79 : 19,068.57 = 7,530.15 : x
2. Step 2: Convert to fraction form
   13,817.79/19,068.57 = 7,530.15/x
3. Step 3: Cross multiply
   13,817.79x = 19,068.57 × 7,530.15
4. Step 4: Simplify right side
   13,817.79x = 143,589,192.39
5. Step 5: Solve for x
   x = 143,589,192.39/13,817.79
6. Step 6: Final answer
   x = 10,391.62