Finding the Fourth Proportional to 9,428.99, 14,077.22 and 7,788.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,428.99 : 14,077.22 = 7,788.74 : x
2. Step 2: Convert to fraction form
   9,428.99/14,077.22 = 7,788.74/x
3. Step 3: Cross multiply
   9,428.99x = 14,077.22 × 7,788.74
4. Step 4: Simplify right side
   9,428.99x = 109,643,697.17
5. Step 5: Solve for x
   x = 109,643,697.17/9,428.99
6. Step 6: Final answer
   x = 11,628.37