Finding the Fourth Proportional to 12,355.58, 17,051.91 and 7,051.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,355.58 : 17,051.91 = 7,051.19 : x
2. Step 2: Convert to fraction form
   12,355.58/17,051.91 = 7,051.19/x
3. Step 3: Cross multiply
   12,355.58x = 17,051.91 × 7,051.19
4. Step 4: Simplify right side
   12,355.58x = 120,236,281.15
5. Step 5: Solve for x
   x = 120,236,281.15/12,355.58
6. Step 6: Final answer
   x = 9,731.34