Finding the Fourth Proportional to 13,865.45, 19,134.50 and 7,577.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,865.45 : 19,134.50 = 7,577.82 : x
2. Step 2: Convert to fraction form
   13,865.45/19,134.50 = 7,577.82/x
3. Step 3: Cross multiply
   13,865.45x = 19,134.50 × 7,577.82
4. Step 4: Simplify right side
   13,865.45x = 144,997,758.90
5. Step 5: Solve for x
   x = 144,997,758.90/13,865.45
6. Step 6: Final answer
   x = 10,457.49