Finding the Fourth Proportional to 10,075.78, 15,113.72 and 3,412.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,075.78 : 15,113.72 = 3,412.34 : x
2. Step 2: Convert to fraction form
   10,075.78/15,113.72 = 3,412.34/x
3. Step 3: Cross multiply
   10,075.78x = 15,113.72 × 3,412.34
4. Step 4: Simplify right side
   10,075.78x = 51,573,151.30
5. Step 5: Solve for x
   x = 51,573,151.30/10,075.78
6. Step 6: Final answer
   x = 5,118.53