Finding the Fourth Proportional to 21,875,308.16, 30,188,242.04 and 12,085,977.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,875,308.16 : 30,188,242.04 = 12,085,977.50 : x
2. Step 2: Convert to fraction form
   21,875,308.16/30,188,242.04 = 12,085,977.50/x
3. Step 3: Cross multiply
   21,875,308.16x = 30,188,242.04 × 12,085,977.50
4. Step 4: Simplify right side
   21,875,308.16x = 364,854,413,848,623
5. Step 5: Solve for x
   x = 364,854,413,848,623/21,875,308.16
6. Step 6: Final answer
   x = 16,678,823.96