Finding the Fourth Proportional to 12,788.60, 17,646.71 and 7,411.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788.60 : 17,646.71 = 7,411.01 : x
2. Step 2: Convert to fraction form
   12,788.60/17,646.71 = 7,411.01/x
3. Step 3: Cross multiply
   12,788.60x = 17,646.71 × 7,411.01
4. Step 4: Simplify right side
   12,788.60x = 130,779,818.99
5. Step 5: Solve for x
   x = 130,779,818.99/12,788.60
6. Step 6: Final answer
   x = 10,226.29