Finding the Fourth Proportional to 12,510.86, 18,763.55 and 4,192.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,510.86 : 18,763.55 = 4,192.05 : x
2. Step 2: Convert to fraction form
   12,510.86/18,763.55 = 4,192.05/x
3. Step 3: Cross multiply
   12,510.86x = 18,763.55 × 4,192.05
4. Step 4: Simplify right side
   12,510.86x = 78,657,804.90
5. Step 5: Solve for x
   x = 78,657,804.90/12,510.86
6. Step 6: Final answer
   x = 6,287.16