Finding the Fourth Proportional to 52,411.78, 72,326.09 and 28,538.40

Step by Step Solution

1. Step 1: Write the proportion equation
   52,411.78 : 72,326.09 = 28,538.40 : x
2. Step 2: Convert to fraction form
   52,411.78/72,326.09 = 28,538.40/x
3. Step 3: Cross multiply
   52,411.78x = 72,326.09 × 28,538.40
4. Step 4: Simplify right side
   52,411.78x = 2,064,070,886.86
5. Step 5: Solve for x
   x = 2,064,070,886.86/52,411.78
6. Step 6: Final answer
   x = 39,381.81