Finding the Fourth Proportional to 38,002.77, 52,442.79 and 21,005.82

Step by Step Solution

1. Step 1: Write the proportion equation
   38,002.77 : 52,442.79 = 21,005.82 : x
2. Step 2: Convert to fraction form
   38,002.77/52,442.79 = 21,005.82/x
3. Step 3: Cross multiply
   38,002.77x = 52,442.79 × 21,005.82
4. Step 4: Simplify right side
   38,002.77x = 1,101,603,807.04
5. Step 5: Solve for x
   x = 1,101,603,807.04/38,002.77
6. Step 6: Final answer
   x = 28,987.46