Finding the Fourth Proportional to 9,051.16, 12,491.40 and 5,072.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,051.16 : 12,491.40 = 5,072.23 : x
2. Step 2: Convert to fraction form
   9,051.16/12,491.40 = 5,072.23/x
3. Step 3: Cross multiply
   9,051.16x = 12,491.40 × 5,072.23
4. Step 4: Simplify right side
   9,051.16x = 63,359,253.82
5. Step 5: Solve for x
   x = 63,359,253.82/9,051.16
6. Step 6: Final answer
   x = 7,000.13