Finding the Fourth Proportional to 10,256.84, 15,390.18 and 5,061.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,256.84 : 15,390.18 = 5,061.56 : x
2. Step 2: Convert to fraction form
   10,256.84/15,390.18 = 5,061.56/x
3. Step 3: Cross multiply
   10,256.84x = 15,390.18 × 5,061.56
4. Step 4: Simplify right side
   10,256.84x = 77,898,319.48
5. Step 5: Solve for x
   x = 77,898,319.48/10,256.84
6. Step 6: Final answer
   x = 7,594.77