Finding the Fourth Proportional to 52,210.52, 78,315.10 and 12,767.98

Step by Step Solution

1. Step 1: Write the proportion equation
   52,210.52 : 78,315.10 = 12,767.98 : x
2. Step 2: Convert to fraction form
   52,210.52/78,315.10 = 12,767.98/x
3. Step 3: Cross multiply
   52,210.52x = 78,315.10 × 12,767.98
4. Step 4: Simplify right side
   52,210.52x = 999,925,621.45
5. Step 5: Solve for x
   x = 999,925,621.45/52,210.52
6. Step 6: Final answer
   x = 19,151.80