Finding the Fourth Proportional to 16,749,442.56, 23,112,394.56 and 9,405,788.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,749,442.56 : 23,112,394.56 = 9,405,788.16 : x
2. Step 2: Convert to fraction form
   16,749,442.56/23,112,394.56 = 9,405,788.16/x
3. Step 3: Cross multiply
   16,749,442.56x = 23,112,394.56 × 9,405,788.16
4. Step 4: Simplify right side
   16,749,442.56x = 217,390,287,101,696.41
5. Step 5: Solve for x
   x = 217,390,287,101,696.41/16,749,442.56
6. Step 6: Final answer
   x = 12,978,956.54