Finding the Fourth Proportional to 28,842.09, 43,259.69 and 7,780.52

Step by Step Solution

1. Step 1: Write the proportion equation
   28,842.09 : 43,259.69 = 7,780.52 : x
2. Step 2: Convert to fraction form
   28,842.09/43,259.69 = 7,780.52/x
3. Step 3: Cross multiply
   28,842.09x = 43,259.69 × 7,780.52
4. Step 4: Simplify right side
   28,842.09x = 336,582,967.07
5. Step 5: Solve for x
   x = 336,582,967.07/28,842.09
6. Step 6: Final answer
   x = 11,669.85