Finding the Fourth Proportional to 13,510.64, 18,642.78 and 7,541.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,510.64 : 18,642.78 = 7,541.48 : x
2. Step 2: Convert to fraction form
   13,510.64/18,642.78 = 7,541.48/x
3. Step 3: Cross multiply
   13,510.64x = 18,642.78 × 7,541.48
4. Step 4: Simplify right side
   13,510.64x = 140,594,152.51
5. Step 5: Solve for x
   x = 140,594,152.51/13,510.64
6. Step 6: Final answer
   x = 10,406.18