Finding the Fourth Proportional to 16,128,521.90, 22,609,790.50 and 16,128,521.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,128,521.90 : 22,609,790.50 = 16,128,521.90 : x
2. Step 2: Convert to fraction form
   16,128,521.90/22,609,790.50 = 16,128,521.90/x
3. Step 3: Cross multiply
   16,128,521.90x = 22,609,790.50 × 16,128,521.90
4. Step 4: Simplify right side
   16,128,521.90x = 364,662,501,233,661.94
5. Step 5: Solve for x
   x = 364,662,501,233,661.94/16,128,521.90
6. Step 6: Final answer
   x = 22,609,790.50