Finding the Fourth Proportional to 52,421.40, 72,341.82 and 28,548.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,421.40 : 72,341.82 = 28,548.18 : x
2. Step 2: Convert to fraction form
   52,421.40/72,341.82 = 28,548.18/x
3. Step 3: Cross multiply
   52,421.40x = 72,341.82 × 28,548.18
4. Step 4: Simplify right side
   52,421.40x = 2,065,227,298.89
5. Step 5: Solve for x
   x = 2,065,227,298.89/52,421.40
6. Step 6: Final answer
   x = 39,396.65