Finding the Fourth Proportional to 10,715.78, 16,075.96 and 5,451.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,715.78 : 16,075.96 = 5,451.52 : x
2. Step 2: Convert to fraction form
   10,715.78/16,075.96 = 5,451.52/x
3. Step 3: Cross multiply
   10,715.78x = 16,075.96 × 5,451.52
4. Step 4: Simplify right side
   10,715.78x = 87,638,417.46
5. Step 5: Solve for x
   x = 87,638,417.46/10,715.78
6. Step 6: Final answer
   x = 8,178.45