Finding the Fourth Proportional to 37,810,212.72, 52,178,306.12 and 21,512,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,810,212.72 : 52,178,306.12 = 21,512,688.72 : x
2. Step 2: Convert to fraction form
   37,810,212.72/52,178,306.12 = 21,512,688.72/x
3. Step 3: Cross multiply
   37,810,212.72x = 52,178,306.12 × 21,512,688.72
4. Step 4: Simplify right side
   37,810,212.72x = 1,122,495,657,496,430.88
5. Step 5: Solve for x
   x = 1,122,495,657,496,430.88/37,810,212.72
6. Step 6: Final answer
   x = 29,687,631.38