Finding the Fourth Proportional to 48,250.72, 72,380.40 and 13,190.56

Step by Step Solution

1. Step 1: Write the proportion equation
   48,250.72 : 72,380.40 = 13,190.56 : x
2. Step 2: Convert to fraction form
   48,250.72/72,380.40 = 13,190.56/x
3. Step 3: Cross multiply
   48,250.72x = 72,380.40 × 13,190.56
4. Step 4: Simplify right side
   48,250.72x = 954,738,009.02
5. Step 5: Solve for x
   x = 954,738,009.02/48,250.72
6. Step 6: Final answer
   x = 19,787.02