Finding the Fourth Proportional to 12,977.58, 19,485.81 and 12,523.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,977.58 : 19,485.81 = 12,523.98 : x
2. Step 2: Convert to fraction form
   12,977.58/19,485.81 = 12,523.98/x
3. Step 3: Cross multiply
   12,977.58x = 19,485.81 × 12,523.98
4. Step 4: Simplify right side
   12,977.58x = 244,039,894.72
5. Step 5: Solve for x
   x = 244,039,894.72/12,977.58
6. Step 6: Final answer
   x = 18,804.73