Finding the Fourth Proportional to 48,501.72, 72,739.62 and 13,443.30

Step by Step Solution

1. Step 1: Write the proportion equation
   48,501.72 : 72,739.62 = 13,443.30 : x
2. Step 2: Convert to fraction form
   48,501.72/72,739.62 = 13,443.30/x
3. Step 3: Cross multiply
   48,501.72x = 72,739.62 × 13,443.30
4. Step 4: Simplify right side
   48,501.72x = 977,860,533.55
5. Step 5: Solve for x
   x = 977,860,533.55/48,501.72
6. Step 6: Final answer
   x = 20,161.36