Finding the Fourth Proportional to 9,052.05, 12,490.91 and 5,072.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,052.05 : 12,490.91 = 5,072.32 : x
2. Step 2: Convert to fraction form
   9,052.05/12,490.91 = 5,072.32/x
3. Step 3: Cross multiply
   9,052.05x = 12,490.91 × 5,072.32
4. Step 4: Simplify right side
   9,052.05x = 63,357,901.88
5. Step 5: Solve for x
   x = 63,357,901.88/9,052.05
6. Step 6: Final answer
   x = 6,999.28