Finding the Fourth Proportional to 9,051.80, 12,491.58 and 5,018.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,051.80 : 12,491.58 = 5,018.72 : x
2. Step 2: Convert to fraction form
   9,051.80/12,491.58 = 5,018.72/x
3. Step 3: Cross multiply
   9,051.80x = 12,491.58 × 5,018.72
4. Step 4: Simplify right side
   9,051.80x = 62,691,742.38
5. Step 5: Solve for x
   x = 62,691,742.38/9,051.80
6. Step 6: Final answer
   x = 6,925.89