Finding the Fourth Proportional to 13,159.98, 18,152.37 and 7,851.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,159.98 : 18,152.37 = 7,851.78 : x
2. Step 2: Convert to fraction form
   13,159.98/18,152.37 = 7,851.78/x
3. Step 3: Cross multiply
   13,159.98x = 18,152.37 × 7,851.78
4. Step 4: Simplify right side
   13,159.98x = 142,528,415.72
5. Step 5: Solve for x
   x = 142,528,415.72/13,159.98
6. Step 6: Final answer
   x = 10,830.44