Finding the Fourth Proportional to 16,209,091.10, 22,353,386.22 and 12,912,345.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,209,091.10 : 22,353,386.22 = 12,912,345.56 : x
2. Step 2: Convert to fraction form
   16,209,091.10/22,353,386.22 = 12,912,345.56/x
3. Step 3: Cross multiply
   16,209,091.10x = 22,353,386.22 × 12,912,345.56
4. Step 4: Simplify right side
   16,209,091.10x = 288,634,647,364,665.62
5. Step 5: Solve for x
   x = 288,634,647,364,665.62/16,209,091.10
6. Step 6: Final answer
   x = 17,806,960.65