Finding the Fourth Proportional to 52,180.56, 78,271.56 and 12,738.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52,180.56 : 78,271.56 = 12,738.60 : x
2. Step 2: Convert to fraction form
   52,180.56/78,271.56 = 12,738.60/x
3. Step 3: Cross multiply
   52,180.56x = 78,271.56 × 12,738.60
4. Step 4: Simplify right side
   52,180.56x = 997,070,094.22
5. Step 5: Solve for x
   x = 997,070,094.22/52,180.56
6. Step 6: Final answer
   x = 19,108.08